Perhaps you should try some spelling variations:
lang kyoung » wang hyoung, kang young, hwang byoung
kyoung yun » young yun, kyoung yang, hyoung gun
gain yang » dan yang, daun yang, tan yang
yun yuan » yan yuan, sun yan, xu yuan
yang hui » yang jui, yang muxi, zhang hui
wang hui » wang hua, wang zhi, wang wei

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: lang kyoung yun yuan ((gain yang) OR (du yang)) yi ((yang hui) OR (wang hui)) ;~.
• Adding a wildcard symbol may retrieve word variants: lang kyoung yun yuan ((gain yang) or (du yang)) yi ((yang hui) or (wang hui)) ;*.