Bigger Thumbnails in Google Search for Tablets

Google Search's tablet interface highlights some of the top search results if they're from video sites like YouTube or Dailymotion. Google shows much bigger thumbnails, so the search results really stand out. Unfortunately, Google no longer includes a snippet.

It's likely that this UI is used for queries that return a lot of video results. Some examples that worked for me in the tablet interface: [internship trailer], [u2 one corbijn video].

It's interesting to notice that Google adds a +1 button next to the video results when the top result is highlighted. The +1 button has been recently removed from the tablet interface, so these results are treated differently.