I'm stunned to not find someone searching for this before.

Google Sets was a great labs project that allows you to get suggestions on the next word in a group. This was particularly useful if you forget the name of a website for example. It was deleted a year or 2 ago.

For example: busuu, rosetta stone, livemocha, duolingo

and the suggestion might be "babbel"

There are keyword tools out there but this feature I think works better. I would have expected Wolfram to have this but I have tried many different syntax variations and still no result.

I hope I am posting in the right forum? Searching under functionality there appeared to be no category match... does this mean the feature simply isn't there?