Non-case-sensitive search (default) makes the search script match uppercase and lowercase letters. For example if you search for "TrIpOd" it will return the result "tripod" if found.

Exact search (default) searches for exact words. For example if you search for "the" it will only show pages containing the word "the". Fuzzy search looks for prefixes. For example if you search for "the" it will also show the words "then" or "there"