dA's search doesn't work very well.
I'm probably not the only one who's come across a lot of fetish art when trying to find something completely different. It's not that I don't think it should be on dA, it's just frustrating to find so much of it. It's not relevant to my searches.
You should enter all of your deviantART searches into Google, not dA itself.
Examples as to why:
This example applies solely to the mobile site. I tried to search "cocoa" in my friend GhostiKid (https://www.deviantart.com/ghostikid)'s gallery. This keyword is in the title of the deviation! Then I tried tapping on the folder which showed the deviation I was looking for. Both turned up nothing. Sea