By default, this search box looks for content in which any of the supplied terms match. The basic operators for refining your search are +, -, and ".
To indicate that a term must appear in the result set prepend a plus-sign (+) to the term. For example:
+piano +violin
To indicate that a term must not appear in the result set, prepend a minus-sign (-) to the term. For example:
piano -violin
To search for an exact phrase, surround it with quotes ("). For example:
piano "graduate recital"