Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
tan yang » dan yang, tan ying, tao yang
tan yong » tan hong, tan kong, tan ying
yan yun » yan yuan, yang yun, yap yun
yan kun » yan guan, yan yuan
yi dang » yi yang, yi chang
yi gang » ii gang, i gang, li gang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong ((yan yun) or (yan kun)) ((tan yang) OR (tan yong)) ((yi dang) or (yi gang)) hadi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong ((yan yun) OR (yan kun)) ((tan yang) OR (tan yong)) ((yi dang) OR (yi gang)) hadi ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong ((yan yun) or (yan kun)) ((tan yang) OR (tan yong)) ((yi dang) or (yi gang)) hadi ;*".