O.K … thank you for your information … I’ve searched a lot and try to modify for myself the search function … but as you say it is not simple to do … so I hope for the future 
– Thank you.
I want to try to explain a little bit more: I looked at the tables in the MySQL Database (bbpress only install – not WP integration) – in the table “bb_users” are some fields like “user_login”, “user_nicename” and many more …
My problem is that the search function does not give me any results if I search for a user name (user_login) or for example “user_nicename” – and at this time I think it is unrelevant if the user have post something or not. Seams that this fields are not in the search include only the topic or the content of a post is relevant for the search function …
My question is: How can I modify the search that these fields are also relevant for the search?
Thank you very much for help …
I think the search function search only “recent post” and “overall post” – so it is impossible to find users who do not have post already. But where can I customize what fields the search function should analyse?
When ever a user have post a message the search function gives result of his username in a search …
