Perhaps you should try some spelling variations:
sung myung » song byung
zhang yan » zhang fan, zhang jian, wang yan
dan yang » daun yang, tan yang, wang yang
yang jun » yang jui, pang jun, yang jin
dong bin » dong sin, dong di, dann bin
yan run » can run, yan kun, bank run
run dan » run gain, run pain

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

• Performing a fuzzy search may retrieve terms with similar spellings: (lang or wan) zhang yan run dan yang jun ((dong bin) or (sung myung)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (lang OR wan) zhang yan run dan yang jun ((dong bin) OR (sung myung)) ;.
• Adding a wildcard symbol may retrieve word variants: (lang or wan) zhang yan run dan yang jun ((dong bin) or (sung myung)) ;*.