Thanks for your suggestion but it didn't work.
I put the URL:

<https://sourceforge.net/forum/forum.php?forum_id=128082>

and as filter:

-*
+*.png +*.gif +*.jpg +*.css +*.js
+/forum/forum.php?thread_id=*[0-9]&forum_id=128082
+*.htm +*.html

but it didn´t work.
Any help?Thanks,

Ronald