Search by custom fields

I want to realize advanced search on my web-site. I tried to modify standart search by adding extra fields to the page, but after clicking to the “search” i just see my homepage and something like this
/?type2=apartment&city=Madrid&cheap=100&rooms=3
in my adress page. Then i tried to use method from here http://matthewaprice.com/search-multiple-custom-fields-in-wordpress/
but result was the same. Guys please help me! It’s very necessary to make it after 1 hour! Someone give me advice, thanks.