Most databases will assume you are searching for all the terms you enter in the search bar unless you give it specific searching instructions using the terms AND, OR, or NOT.
AND, OR, NOT (known as Boolean Operators) are used to connect and define the relationship between your search terms. Use uppercase letters for Boolean operators within searches.
AND
Narrows the search by telling Library Search to search for all records with both keywords or phrases.
OR
Broadens the search to include records with either keyword/phrase, or both.
NOT
Narrows your search. Tells database to search the first word but exclude the second word.
Use parentheses to group terms within a search. Grouping similar or related terms in parentheses with OR allows you to search multiple variations of a concept at the same time.
Use quotation marks to search for an exact phrase. Searching for "sociooeconomic status" would look for that exact phrase only, instead of looking for the words socioeconomic and status separately.