Each database may have different features that will expedite your searches.
Look at links and/or icons for these functions:
Use Boolean operators (the words AND, OR, and NOT) to combine your search terms.
You can use as many Boolean operators as you like in a search phrase, but include related concepts in parentheses to keep the phrase organized (this is called nesting). For example:
Dog OR Canine AND Bark NOT Tree: Messy
(Dog OR Canine) AND (Bark NOT Tree): Clear
For more information and practice exercises, see the Boolean searching guide by the Colorado State University Libraries.