And, or and near operators can be used. (The default is and.)
Searching is not case-sensitive.

Limited wildcard searches are possible, by appending a * to the end of a word.
Otherwise the search looks for complete words.
Searching starts at the beginning of a word. You can't look for segments in the middle of words.

Parentheses force a search order.
Searching for phrases is not supported.

Examples:
   boat sail
   boat and sail
   boat or sail
   boat and (row or sail)
   sail* near kayak