Search logic in which advanced search expressions are created by using "operators" (terms such as AND, NOT, OR) to link terms in a search string. See the help for more details.
A search in which two or more search terms are combined with the Boolean logical operators AND, OR and NOT
A search based on using Boolean operators, usually AND or OR, that allows the user to narrow the information returned in a search to a comprehensible level. For example, a search for Cajun AND food would return only information pertaining to both "Cajun" and "food."