@dave
Every search function I've tried has had an issue.
All the searches are limited to single word searches. If you try to search for more than word at a time, there are no results (even when I know they exist).
As Zuzu said, Forum search returns this message irregardless of the number of words searched,
"Query failed: connection to localhost:3312 failed (errno=111, msg=Connection refused). No matches found."