"Location not found" but Google Maps can find it

I'm working on a timeline with a bunch of events in Japan. So far I've had two addresses that result in a "Location not found" error in Dipity but when I search for the address in Google Maps there is no problem. In one case it's a building name that the Dipity search doesn't recognize, and the other is an unusually long, complicated address. I can give you the specifics if you want, but the addresses are in Japanese, and they don't work quite the same way as US ones do.