I think the reason I was successful was that I asked “tell me about Tony Lawrence and UNIX.“ That gets a lot of results from my website, and my writing there was often personal as I was also advertising my business. Therefore, it could find out a lot about me. If you asked about Martin Edic and his books, I don’t think it could get much personal info, though maybe from the author bios? And of course adding “Medium” just gets too many widely varied posts.