Boolean operators include the terms AND, OR, NOT
Database limiters are tools available in many databases that provide options to narrow your search results.
Quotation marks are used to indicated the terms enclosed in the marks must be searched as a phrase. Use quotation marks when searching multi-word concepts.
Truncation is used to include variant endings of a root term. Use truncation when there are various spellings of a term or you want to search to include variations on a term.
Wildcards use symbols to substitute for one or more letters of a word. Use wildcards when searching a term which may have different spellings or for terms that may change meanings with variant spellings.