Searching on other sites does not function.

Searching other sites while using google's code works but other sites the same method in how i got google's url code does not seem to work.
when I go on AOL and I press search and take its url at the top before the word I typed it gives me this
http://search.aol.com/aol/search?encquery=

When I try to use the code to make it search it does not function with my code.
Also another site don't have an equal "=" and the site doesn't reply to give me the proper code so is their a way to find it?

Thanks

maybe I didn't understand exactly what you mean, but the easiest way to search a specific site should be using the "site:domain" command

it is not clear what you mean to ask, as rehesh told site: domain name will give u indexed pages by that particular search engine. please specify your query