So, it used to be that loli was a valid tag.
Apparently it was decided to alias it to "young".
I'm not sure why, because now to find what you'd get from that 1 tag, you have to search "young female human".
And that's still not even 100% because it pulls up shota with an adult female in the picture too.
Same goes for shota, except obviously male not female.
Updated by SnowWolf