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OCLC Support

Refine an advanced search

Learn how to refine advanced searches, searches of MEDLINE, SCIPIO, WorldCat and WorldCat Dissertations and Theses in FirstSearch.

Refine an advanced search

If your search does not yield the results you want, try one or more of the following.

Browse indexes

Browse the indexes before you search to check the spelling or format of your search terms and phrases. To access the Browse indexes feature, click the Browse Index button (Index button) in the Search for: area.

Limits

Select from the limits displayed on the advanced search menu if your search produced too many records. Remove previously selected limits if your search produced too few or no records. You can limit by year of publication or items in your library in any database.

refine by example
Year(s) of publication 1996-1998

Use the Ranking Results feature

FirstSearch can rank your results by relevance or year of publication. A relevance rank is a measure of how closely a record matches your search terms. Records with the highest relevance rank will be displayed at the top of the results list. By contrast, a rank by year will display the most recently published records at the top of the results list.

To organize your results list by rank, choose a rank option from the drop-down list. The default option is no ranking. Only the 1000 most highly-ranked records will be displayed.

Refine a search in MEDLINE

If your search does not yield the results you want, try one or more of the following.

Browse indexes

Browse the indexes before you search to check the spelling or format of your search terms and phrases. To access the Browse indexes feature, click the Browse Index button (Index button) in the Search for: area.

Use limiters

Select from the limits displayed on the advanced search menu if your search produced too many records. Remove previously selected limits if your search produced too few or no records.

refine by format or additional instruction
年份 Use yyyy-yyyy for a year range
Abstract Indicator Use the drop-down menu to select a limit to items with or without abstracts.
Article Type Phrase Use the drop-down menu to select a limit for article type.
Language Phrase Use the drop-down menu to select a limit for languages.
Record Type Phrase Use the drop-down menu to select a limit for record type.
Record Status Phrase Use the drop-down menu to select a limit for record status.
Full text Check the full text option to limit your search to items with links to full text in other databases.
Items in my library Items in my library can be selected in addition to Library Code.
Library Code Click the Find codes... link to view a list of valid Library Codes.

Find preferred subjects (Library of Congress Subject Headings)

Use the Find preferred subjects feature to help you find alternate terms for your search. This can be especially helpful if your terms are spelled correctly but not giving you the number of results you need. To access the Find preferred subjects feature, click the Subjects button (Subjects button) in the top right corner of the Search screen.

Find related authors or subjects

From the List of Records screen, click the Related Authors button (Related Authors button) or the Related Subjects (Related Subjects button) button to find related authors or subjects based on your current results set.

Use the Limit feature

From the List of Records screen, click the Limit button (Limit button) to use the Limit search feature with your current results set.

Use the Ranking Results feature

FirstSearch can rank your results by relevance or year of publication. A relevance rank is a measure of how closely a record matches your search terms. Records with the highest relevance rank will be displayed at the top of the results list. By contrast, a rank by year will display the most recently published records at the top of the results list.

To organize your results list by rank, choose a rank option from the drop-down list. The default option is no ranking. Only the 1000 most highly-ranked records will be displayed.

Refine a search in SCIPIO

If your search does not yield the results you want, try one or more of the following.

Use limiters

Select from the limits displayed on the advanced search menu if your search produced too many records. Remove previously selected limits if your search produced too few or no records.

refine by format or additional instruction
年份 Use yyyy-yyyy for a year range.
語言 Select the down arrow to show the full list of languages.
Limit availability to: You can limit your search to specific institutions by doing one or both of the following:
  • Select Items in my library to limit your search to your local library.
  • Enter one or more OCLC symbols in Library Code to limit your search to additional libraries. Select the Find codes... link to view a list of valid Library Code

Additional limiting

You can further refine your search results on the List of Records screen. Click the Help button (Help button) on the List of Records screen, then select The List of Records screen (WorldCat) in the resulting Help menu for more information.

Use the Ranking Results feature

FirstSearch can rank your results by relevance or by date of publication. A relevance rank is a measure of how closely a record matches your search terms. Records with the highest relevance rank will be displayed at the top of the results list. By contrast, a rank by date will display the most recently published items at the top of the results list.

To organize your results list by rank, choose a rank option from the Rank by: drop-down list. The default option is no ranking. Only the 1000 most highly-ranked records will be displayed.

Refine a search in WorldCat

If your search does not yield the results you want, try one or more of the following.

Find preferred subjects (Library of Congress Subject Headings)

Use the Find preferred subjects feature to help you find alternate terms for your search. This can be especially helpful if your terms are spelled correctly but not giving you the number of results you need. To access the Find preferred subjects feature, click the Subjects button (Subjects button) in the top right corner of the Search screen.

Browse indexes

Browse the indexes before you search to check the spelling or format of your search terms and phrases. To access the Browse indexes feature, click the Browse Index button (Index button) in the Search for: area.

Use limiters

Select from the limits displayed on the advanced search menu if your search produced too many records. Remove previously selected limits if your search produced too few or no records.

refine by format or additional instruction
年份 Use yyyy-yyyy for a year range.
語言 Select Show all languages... to generate the full list of language options.
Number of Libraries Limits your search to items held by 5 or more, 50 or more, or 500 or more libraries.
Limit type to: Click the Help button (Help button) in the Limit type to: section to read more about document types.
Limit availability to: You can limit your search to specific institutions by doing one or both of the following:
 
  • Check Items in my library to limit your search to your local library.
  • Enter one or more OCLC symbols in Library Code to limit your search to additional libraries. Select the Find codes... link to view a list of valid Library Code

Additional limiting

You can further refine your search results on the List of Records screen. Click the Help button (Help button) on the List of Records screen, then select The List of Records screen (WorldCat) in the resulting Help menu for more information.

Use the Ranking Results feature

You can order your search results by any of the following: Number of Libraries, Relevance, Date or Accession Number. See Select a rank option in Group_Catalog or WorldCat for more information.

Refine a search in WorldCat Dissertations and Theses

If your search does not yield the results you want, try one or more of the following.

Find preferred subjects (Library of Congress Subject Headings)

Use the Find preferred subjects feature to help you find alternate terms for your search. This can be especially helpful if your terms are spelled correctly but not giving you the number of results you need. To access the Find preferred subjects feature, click the Subjects button (Subjects button) in the top right corner of the Search screen.

Use limiters

Select from the limits displayed on the advanced search menu if your search produced too many records. Remove previously selected limits if your search produced too few or no records.

refine by format or additional instruction
年份 Use yyyy-yyyy for a year range.
語言 Select Show all languages... to generate the full list of language options.
Number of Libraries Limits your search to items held by 5 or more, 50 or more, or 500 or more libraries.
Limit type to: Click the Help button (Help button) in the Limit type to: section to read more about document types.
Limit availability to: You can limit your search to specific institutions by doing one or both of the following:
 
  • Check Items in my library to limit your search to your local library.
  • Enter one or more OCLC symbols in Library Code to limit your search to additional libraries. Select the Find codes... link to view a list of valid Library Code

Additional limiting

You can further refine your search results on the List of Records screen. Click the Help button (Help button) on the List of Records screen, then select The List of Records screen (WorldCat) in the resulting Help menu for more information.