Fiddleloo is a search engine built on Penguinmod for people under 18 so you can't accses 18+ content on it
you could add one manualy by adding the title to the sites.txt file, then adding a link to the sites/ folder (no file extention) then adding a description to the description/ folder (no file extention) or go to: https://docs.google.com/forms/d/e/1FAIpQLScf3SscpcllCZ22_bYHfwb6GzePb8vfGghkthBHrKoRjair5g/viewform?usp=header to suggest one