I am sorry for the trouble you have with the plugin!
The issues are mostly known here for my and my co-author. These issues regarding changes from bbPress 2.0.x to bbPress 2.1+ PLUS a lot of various template issues with lots of different themes out there (which all handle the search result display a little bit different...).
We're already tweaking and do workarounds on the plugin and put in lots of user requests we got. We don't have any release date yet regarding the whole template issues. So please have some patience still. (THANKS!)
In the meantime maybe you want to swith to another plugin?
--> has views for topic search!
plus this: http://wordpress.org/extend/plugins/gd-bbpress-widgets/
--> has a "Search Topics" widget!
Maybe this combination works with your theme?
Hope this helps, thanks, dave :)