Perhaps you should try some spelling variations:
yihan guan » yan guan
lang yan » wang yan, wang yang, zhang yan
yan yuan » yan guan, fang yuan, nan yan
dan yang » daun yang, tan yang, wang yang
gang hai » dang hai, shang hai, eang hay
yan yun » yang yun, yan kun, yap yun
yang ii » yang di, yang xi, yang yi

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: lang yan ((yan yun) OR (((yan yuan) OR (yihan guan)))) dan yang ii gang hai ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan ((yan yun) or (((yan yuan) or (yihan guan)))) dan yang ii gang hai ;*.