# The Search Engine A search query consists of one or more specified words. Boolean operators cannot be used. Instead of Boolean operators, use the All the words, Any word, Exact phrase, or Without the word fields that are provided. The search process is not case-sensitive, which means that `Hello, HELLO, and hElLo` are all considered the same. The wildcard symbol `*` is not supported. When more than one field is used, the query is evaluated with precedence from top to bottom. For example, the query:
All the words: | project management
Any word: | adopt vision
Exact phrase: | Rational Unified Process
Without the words: | implementation
is evaluated as (project AND management) AND (adopt OR vision) AND (Rational Unified Process) NOT (implementation). In other words, the matching pages must contain both of the words "project" and "management", the word "adopt" or "vision", along with the phrase "Rational Unified Process". Matching pages must not contain the word "implementation". Notice that wildcard searches using the wildcard character `*` or boolean operators are not supported |  |