I found this google set clone that seems to be a bit more reliable and has some nice features, like an improvement of the search results. It was done by Nicholas Manolakos. He parsed over 100 million tables so far and created google sets functionality.
1. minus sets no just add them.
2. sort based on average distances.
3. reverse google sets and get the parents, for example “dog”,”cat”,”mouse” might return pets and “pig”,”cow” farm animals.
A very interesting piece of work. Thanks Nicholas.