Filters setup as search

-- url of the page with the problem -- : www.decodareimei.com/decodare/categorie
-- HikaShop version -- : (2.2.2) of HikaShop Busin
-- Joomla version -- : Joomla! 2.5.15
-- PHP version -- : x.x.x
-- Browser(s) name and version -- : google chrome last version
-- Error-message(debug-mod must be tuned on) -- : no erro

Hi, i set that filter to search for product name, description , and keywords.
The problem is , is not searching if i'm not on a product list,
If i'm on the page that show all the category and type some word in that filr, after refresh it show me the same page.
Isearch in forum for solution for 3 h, i found somting similar here: www.hikashop.com/forum/filters-search/86...-filters.html#131323
Bunt i'm not able to solve my problem.

How can you help me? i create an administrator acount for you to take a look?