irrelevant results

http://12hourdealsforyou.com/category/pets/cesarsway-com/
this shows what kind of results i would expect when I enter cesars way or cesarsway.com into the search form on my website http://12hourdealsforyou.com/
instead on the former search I get these results
http://12hourdealsforyou.com/?s=cesars+way

and on the latter search I get these results:
http://12hourdealsforyou.com/?s=cesarsway.com

of course these are useless results, What am I doing wrong?
Please help
Michael

https://wordpress.org/plugins/relevanssi/