Perhaps you should try some spelling variations:
yan yuan » yan guan, fang yuan, yan clan
dan yang » daun yang, wang yang, yang yang
tan yang » tan ying, tan yong, tao yang
kang han » kang chen, kong hang, zhang han
yan yun » yang yun, yan kun, yap yun
nan yan » nan ya, qian yan, nana yaa
xi kang » jin kang, xi zhang
wang » wing, wan, lang

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 yan ((yan yun) OR (((yan yuan) OR (nan yan)))) ((dan yang) OR (tan yang)) xi kang han ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan ((yan yun) or (((yan yuan) or (nan yan)))) ((dan yang) or (tan yang)) xi kang han ;*.