Google's Geocode is ignoring the address

Question

When inputting the following address into google's geocode API, it seems to be ignoring the street address completely. Searching this address in google works fine.

205-9 Nonhyun-dong, Seoul, South Korea

http://maps.googleapis.com/maps/api/geocode/json?address=205-9%20Nonhyun-dong,%20Seoul,%20South%20Korea&sensor=false

It seems to only be the above address that I am having issues with. In the same area, the following address works fine:

1306-5 Seocho 4(sa)-dong, Seoul, South Korea

http://maps.googleapis.com/maps/api/geocode/json?address=1306-5%20Seocho%204(sa)-dong,%20Seoul,%20South%20Korea&sensor=false

*This problem was originally found in my application and I replicated it using the above URLs