Perhaps you should try some spelling variations:
hwang byoung » wang hyoung, kang young
lang hyoung » wang hyoung, kang young
tan chen » tan cheng, ta chen, jane chen
chen yun » chen yu, chen yue, chen yiqun
yun dang » yun jang, duc dang, yun song
yan kun » yan guan, yan yuan
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 hyoung) OR (hwang byoung)) yan kun tan chen yun dang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((lang hyoung) OR (hwang byoung)) yan kun tan chen yun dang hai ;*".