Let the databases help!
On a search results page, databases will list additional search terms or related topics which may help you refine or reformulate a search strategy by using different search terms. For example, this EBSCO results page for a search on "climate change" and "animals," lists the following:
Perhaps a new search using the search terms "biodiversity" and "global warming" will be productive.
More tools to identify search terms
Articles have descriptive terms assigned to them by the author or publisher. These are listed as subjects, keywords, or descriptors. These terms can be helpful in constructing search strategies. Below, you can see the subjects and keywords that describe this article. They are listed on the abstract page:
Cross-search databases
One way to search several (or all) EBSCO or Infotrac databases at once is to click on the EBSCO or Gale Databases PowerSearch hyperlink from the alphabetized database list. Scroll through the list of databases and select the ones you want to search, or to choose all of the databases, click on the "Select/deselect all" box. Then click on the "Continue" button, and you will be taken to your search screen.
You may now start your cross-search of multiple databases!