The field to be searched may be specified by prefixing the search query with 'title:', 'content:', 'name:', or 'intro:'. For example, searching for 'title:news' would return results with the word 'news' in the title.

Boolean operators ('AND', 'OR', 'NOT') may be used to combine or exclude keywords.

Wildcard characters ('*' or '?' ) may be used to represent characters in the search query.