Perhaps you should try some spelling variations:
lang kyoung » wang hyoung, kang young, hwang byoung
kyoung yun » young yun, kyoung yang, hyoung gun
yun guan » yan guan, quan guan, gan guan
tan chen » tan cheng, ta chen, jane chen
yu cheng » yu chen, _ cheng
yun dang » yun jang, duc dang, yun song
hai » hadi, haji, hari

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang kyoung yun guan ((tan chen) or (yu cheng)) yun dang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang kyoung yun guan ((tan chen) OR (yu cheng)) yun dang hai ;*.