Perhaps you should try some spelling variations:
kang chen » chang chen, jane chen, tang chun
yau yung » au yong, yap yun
yan yuan » yan guan, fang yuan, nan yan
dan yang » daun yang, tan yang, wang yang
kang han » kong hang, zhang han, dang hai
yan kun » yan guan
yang xi » yang di, yang yi, yang jui
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang hyoung ((((yan kun) or (yau yung))) or (yan yuan)) dan yang xi ((kang han) OR (kang chen)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang hyoung ((((yan kun) OR (yau yung))) OR (yan yuan)) dan yang xi ((kang han) OR (kang chen)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang hyoung ((((yan kun) or (yau yung))) or (yan yuan)) dan yang xi ((kang han) OR (kang chen)) ;*".