Perhaps you should try some spelling variations:
hyoung gun » young eun
kang chen » chang chen, jane chen, kang han
gun yuan » sun yan, xu yuan, yan yuan
yuan dan » yuan kang, yuan wang, yuan kai
yang jui » yang judy, yang xi, yang yi
wang » wing, wan, lang
hai » hadi, haji, hari

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: wang hyoung gun yuan dan ((yang jui) OR (yang di)) ((kang chen) OR (dang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang hyoung gun yuan dan ((yang jui) OR (yang di)) ((kang chen) or (dang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang hyoung gun yuan dan ((yang jui) OR (yang di)) ((kang chen) or (dang hai)) ;*.