Yahoo Search is getting smarter and better now a days. Yahoo Search has introduced quite many features within last six months. One of the feature that was introduced last October was Yahoo Search Assist. When you type in the search box, Yahoo! Search Assist predicts what you're searching for and offers you suggestions.
Yahoo Search Assist was available to only Yahoo USA till now but now Yahoo has extended its Search Assist feature to India and many other countries.
So now if you type words like "Kareena" and you will get suggestions like "Saif Kareena" or "Kareena Kapoor photos" etc. Even yahoo search knows that Saif Ali khan and Kareena have "Kuchh Kuchh Hota hai" LOL.
You can read more about Yahoo Search Assist {ln:nw:http://tools.search.yahoo.com/newsearch/searchassist.html 'here}
One thing I noticed though, you don't get the search assist if you do the search on "in.search.yahoo.com". The search assist only works for "in.yahoo.com" aka the front page. Is that a bug??