I had something similar happen to me when I was looking up information about bee varieties when I got started with this, so I know how frustrating it is to just have fragments.
Try putting specific phrases you remember into Reddit or reading communities like Goodreads, because people there are pretty good at identifying books from vague details. If you remember more things - like whether it was dystopian sci-fi, if something about virtual reality came up specifically, or roughly what year you read it - that's gonna help a lot.
You can also try r/whatsthatbook or reader groups on Facebook, they've got users who basically live for finding stuff like that.