GoDaddy released a video to help find keywords that are trending and take the info and use it to search for names on Afternic. You do need to have a Domain Academy membership for this to be doable.
From the video:
In this video we discuss how to find important words in domain names that are selling to end user buyers in various sales venues and then taking those keywords and using a tool in Domain Academy to filter the 20 million or so names for sale on Afternic.com in order to look for under priced domain names you could potentially resell for more money.