test*

      '*' wildcard tells the search engine to match 0 or more of any characters. For example, to search for test, tests or tester, you can use test*

te?t

      '?' wildcard matches any single character. For example, to search for "text" or "test" you can use te?t

"windows server" ~2

      To search for a "windows" and "server" within 2 words of each other in a document use the tilde, "~" symbol at the end of a phrase.

"windows server"

      You can use double quotes to find the exact phrase

term1 AND (term2 OR term3)

      Boolean expressions are allowed with logical connectors AND, OR and NOT

If you need to include any of special characters ( * ! ? ' " ~ [ ] :) into your search criteria literally, escape them with the \. For example, if you are looking for Horay! type Horay\!.