What is Boolean Search?
Boolean searching is built on a method of symbolic logic developed by George
Boole, a 19th century English mathematician.
Boolean searches allow you to combine words and phrases using the words AND,
OR, NOT (known as Boolean operators) to limit, broaden, or define your search. A
good researcher should know how to do a Boolean Search.
Quotations : Placing quotations around a specific phrase will help you narrow
results in order to find information containing that exact wording.
"AND" logic
AND : Using AND narrows a search by combining
terms.
"OR" logic
OR : Using OR broadens a search to include results
that contain either of the words you're looking for.
"NOT" logic
NOT : Using NOT will narrow a search by exclusion.
(Some search engines, like Google, recognize the
minus (-) symbol, instead of the word NOT).