I know this is really simple but I cannot figure it out for the life of me.

If I do a search on my site for CCTV this is the URL i get:
http://www.clickbuyget.com/index.php?ro ... _name=cctv
What is the 'query parameter'?
I thought it would be ?route=product/search&filter_name but that isn;t working. If one of you coding guru's could be so kind to shed some light on this for me I would be very greatful.
Thank you
