In general, searching in a database is best accomplished by using keywords, subject headings, or groups of terms. However, sometimes it is necessary to use phrases. In order to tell a database to search for a specific phrase: type quotation marks ("") around the phrase that you need to find. This will tell the database (or search engine -- this works in Google, too!) that you want it to find the words you typed exactly as you've typed them. Using quotations will provide you with a more narrowed search.
For example, compare these Discover searches:
Without quotation marks: severe physical disabilities = 225,614 results
With quotation marks: "severe physical disabilities" = 2,311 results
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