This article explains what a Boolean search is and when and how to use Boolean operators in a web search.

In the context of a search engine, a Boolean search is a type of search query where you can use special words or symbols to narrow, broaden, or define your search.

This is possible using Boolean operators such as AND, OR, and NOT, plus symbols such as + (addition) and – (subtraction).

When you include an operator in a Boolean search, you introduce flexibility to get a wider range of results, or you define constraints to limit the number of unrelated results.