Probably because they've been piggybacking off other's search indexes for a while, and the Western World seems downright opposed to actually providing an accurate index of the actual content of the Internet.

There's only so much you can do when your primary index builder's search indexes are probably more accurately reconstituted from https://www.lumendatabase.org/lumendatabase

than their live index.

But hey, that's the price of innovation, right? Can't denormalize access to frigging anything. Have to maintain the info asymmetry.