I agree. I tried Krasnoyarsk Kray and Xingjiang Uygur (and several other variations). I accidentally guessed Yakutsk (and several spelling variations) instead of Sakha because I was thinking of Risk.
I tried Xinjiang, then I tried uyghurstan and it still doesn't work. Having to type 'Xinjiang uyghur autonomous region' is too troublesome. Can you please change it?
I'm sure I put in Mato Grosso! But it didn't take it. And every possible variation of North West / Northwest Territory / Territories but still nothing!