Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
yun kyoung » hyun kyoung, yun young, yi kyoung
kyoung yun » young yun, kyoung yang, hyoung gun
yang yang » wang yang, wang yan
gan guan » yan guan, quan guan, fan guon
cham yun » chae yun, chang yun, chen yun
yun shik » yun hin

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (wing OR lang) ((((yang guang) OR (yang yang))) OR (gan guan)) bin cham yun kyoung yun shik ;~.
• Adding a wildcard symbol may retrieve word variants: (wing or lang) ((((yang guang) or (yang yang))) or (gan guan)) bin cham yun kyoung yun shik ;*.