So far, not much has been found in v1.13 of the Google Photos application but there is one that sticks out. If you search for something, then you'll get those search results like you normally would.

However, there will be a drop down button next to the date that will let you see other things from that day as well. This is great if you remember that you took a picture of one thing on a certain day, but then wanted to explore all of the other photos or videos from that day too.