Re: “Advanced” search options — where and what are they?
In defense of bbPress, I think they went without search for a long time intentionally. It was not even included in the stock template until recently. The intention was that you could use tags to find specific content, click a member’s name to get all the replies they made and topics they started, etc.
For topics with no replies, there is a default view for that (look at the home page of this forum, near the bottom, to see it.) For other views, you probably want the My Views plugin by _ck_.
(look at the bottom right for all the views)