Perhaps you should try some spelling variations:
hyoung gun » young eun
gun yuan » sun yan, xu yuan, yan yuan
yuan tan » huan t'an, yuan kang, yuan ting
tan yang » dan yang, tan ying, tan yong
yi chang » ii chang, ying chang, jin chang
yi eang » yi yang
yi gang » ii gang, i gang, li gang

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: (lang OR wing) hyoung gun yuan tan yang ((((yi eang) OR (yi chang))) OR (yi gang)) hay ;~.
• Adding a wildcard symbol may retrieve word variants: (lang or wing) hyoung gun yuan tan yang ((((yi eang) or (yi chang))) or (yi gang)) hay ;*.