for the moment it's just not in the crawl; I will add +1 into the "add Japanese" column off the back of this interaction
which languages are you searching in? It's likely that they are as-of-yet unsupported. There are a lot of languages we crawl and index in which aren't en/de/fr but non-neo-latin languages are not currently available.
That would be helpful, yes; there is a "submit feedback" button on results pages which allows you to send it directly to us if that works.
a great piece and the related paper is also a cracking read: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=998565 (linked in the piece also)
if you have any recall on where the list came from that's also useful to us. Here's our Bot page: https://www.mojeek.com/bot.html and some external info: https://en.wikipedia.org/wiki/Mojeek
You can send us in results via the submit feedback button or contact page when they're not-so good, if you'd like to help
the possible states are 0, 1, and 420