Perhaps you should try some spelling variations:
yihan guan » yan guan
wang wang » wang yang, wang liang, wang yan
wang yong » wang yang, wang hyoung, wang yan
yan yuan » yan guan, fang yuan, nan yan
dan yang » daun yang, tan yang, wang yang
kang hay » eang hay, kang han, dang hai
yang xi » yang di, yang yi, yang jui
xi kang » jin kang, xi zhang

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 wang) OR (wang yong)) ((yan yuan) OR (yihan guan)) dan yang xi kang hay ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang wang) or (wang yong)) ((yan yuan) or (yihan guan)) dan yang xi kang hay ;*.