Perhaps you should try some spelling variations:
chin chang » china chang, chain change, china zhang
chang wang » chang ann, chang won, hong wang
kyoung yun » young yun, kyoung yang, hyoung gun
zheng yan » zheng alan, zheng quan, zheng xuan
zhang yan » zhang fan, zhang jian, wang yan
hyoung yu » hyoung gun, hong yu, young kyu
je chin » ke china, wen chin

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 ((zheng yan) OR (zhang yan)) je chin chang wang ((hyoung yu) OR (kyoung yun)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((zheng yan) or (zhang yan)) je chin chang wang ((hyoung yu) OR (kyoung yun)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((zheng yan) or (zhang yan)) je chin chang wang ((hyoung yu) OR (kyoung yun)) ;*.