[Plugin: Custom Field List] Not getting correct search output

Please see the search function on the left side of this webpage:

http://penncycle.com/product-list/bikes-1000/road-1001/sport-performance-1002/

I’m unable to find a plug-in that can do that type of search. Have been searching for about 3 hours now on wp and google, any input would be much appreciated!

Thanks!!