Search is so engrained in our daily internet lives that we sometimes forget to stop and think about how it works. Often, when digging for a website on Google or finding a video on YouTube, search is straightforward: type a few keywords into the box, and sift through the results to find what you’re looking for. But what if you’re searching for something so specific that just a couple of keywords and extra parameters can’t filter it? Or, if you don’t even know what you’re searching for? Those are the challenges that the search team at Airbnb is thinking about. In the past few months, the room and apartment sharing company has worked on tuning its product to support different ways people book vacations. First, the company unveiled its last-minute booking product in San Francisco and Los Angeles.