The search feature on Facebook has traditionally been pretty limited. You type in a name of a person or a business and it pulls up their Facebook page. But that’s about to change. Facebook on Tuesday introduced an upgraded search tool, called Graph Search, that will scour the massive social network to answer more sophisticated questions. Want to find buddies of your pal Chris who went to Stanford and live in Chicago? No problem. People who like tennis and live nearby? Here you go. How about photos of Berlin, Germany, from 1989? Done. “This is one of the coolest things we’ve done in awhile,” Facebook co-founder and CEO Mark Zuckerberg told reporters at a press event at the company’s headquarters. Since it became a public company last year Facebook has been under pressure to launch exciting new products, especially for mobile, that will help boost its floundering stock price.