Hi,
Turn off the option "Show the number of products" here:
www.hikashop.com/support/support/documen...l#display_categories
The forum search works fine for me, and I use it quite often. As in other busy forums, you'll just need to be specific with the search term(s) to get the few good matches out of almost 200000 posts across more than 30000 topics. 
However, I agree, too many multi-postings, and yours is another one, haha! It's almost always due to people either not reading the documentation (look, I'm linking you to it, too, and there's a search in the documentation main page as well), or not using the forum search, or not using the specific search terms.