Perhaps you should try some spelling variations:
wang yong » wang yang, wang yan, wang shiyong
yuan kang » yuan wang, yuan chang, chan kang
kang yang » wang yang, yang yang, kang young
zhang hai » zhang dai, shang hai, zhang han
yan yuan » yan guan, fang yuan, nan yan
xi zhang » li zhang, xiao zhang, bin zhang
yang xi » yang di, yang yi, yang jui

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) or (wang hyoung)) yan yuan kang yang xi zhang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yong) OR (wang hyoung)) yan yuan kang yang xi zhang hai ;*.