Boolean Operators
AND: "global warming AND carbon" (searches for articles that contain both phrases)
OR: "global warming OR climate change" (searches for articles that contain either phrase)
NOT: "global warming NOT Al Gore" (searches for articles on global warming that do not mention Al Gore)
Boolean Operators Video
Truncation and Wildcards
An asterisk (*) can be used as a substitute for one or multiple characters at the end of a word. A question mark (?) can be used to replace a single character anywhere within a word. Examples:
environment* (searches for environmental, environment, environments, etc.)
politi* (searches for politics, political, politicians, etc.)
wom?n (searches for woman or women)