Boolean Operators (AND, OR, NOT) give you more control over your search results by narrowing or broadening your search results. You can find these operators in the Advanced Search section of GALILEO.
The word AND will limit your search results by combining two or more key terms or phrases. For example, searching for "Global Warming" AND "Climate Change" will decrease your number of search results by only giving you the results that include both phrases.
The word OR can be used to expand your search results by including terms that are used interchangeably. For example, the words Adolescent and Teenager are synonyms. Searching for Adolescent OR Teenager will increase your number of search results by giving you results that include either one term or the other--or even both terms.
The word NOT will exclude certain terms from your search. For example, searching for "Gap Year" NOT Britain will decrease your number of search results by not including results that talk about Britain.
