Duplicate content - Opencart

[famozni]

In my last report I have a lot of duplicate content. Duplicate pages are:

http://mysite.com/product/search&filter_tag=Сваров�%

http://mysite.com/product/search&filter_tag=бижу

http://mysite.com/product/search&filter_tag=бижузо�%8

And a lot of more, starting with -- http://mysite.com/product/search&filter_tag=

Any ideas?

Maybe I should do something in robots.txt, but please tell me the exact code.

Best Regards,

Emil

[famozni]

My file robots.txt:

user-agent: *
Disallow: /&limit
Disallow: /&sort
Disallow: /?route=checkout/
Disallow: /?route=account/
Disallow: /?route=product/
Disallow: /?route=affiliate/
Disallow: search
Disallow: /pruduct/

I added last row Disallow: /pruduct/

and changed Disallow: /?route=product/search to Disallow: /?route=product/

[Everett]

This should work:

Disallow: /product/search*

Test it out in GWT just to be sure.