Hakia

Hakia - Meaning based Search Engine.

If you’re bored using Google for Search, try out Hakia which is a meaning based search engine.The interface is similar to Google. The engine suggests you to enter not just keywords but a phrase or a question. So you can type a phrase like “What is the use of Ajax”.
I would say the results were spot on. It uses Artificial Intelligence(semantic system) for searching rather than the conventional index. Hakia should do something spectacular for beating Google.

Try the search for yourself.