Improve search function

My website is? <[login to view URL]>? the search function is very basic and I would like to improve it and add a lot of features something like [login to view URL] has on there website where you are able to do categories and in the results they show the product rating if it has one and price ect, as well as related products and misspellings to the closest matches.? So I would like to clean up the results page some too considering there will be a lot more information showing, also any other improvement suggestions I would just like my search to be as user friendly as possible. I will give the ftp information once someone has a reasonable bid and understands where I want to go with it. thank you