Perhaps you should try some spelling variations:
fang yuan » wang yuhan, wang yan, meng yuan
duc shang » duc dang, duc phan, duc phung
shang hai » shang kai, dang hai, chang ha
lang yan » wang yan, wang yang, zhang yan
dan yang » daun yang, tan yang, wang yang
yang duc » yang du, sang duck, yang di
yap yun » yang yun, yau yung

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 ((yap yun) OR (fang yuan)) dan yang duc shang hai ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan ((yap yun) or (fang yuan)) dan yang duc shang hai ;*.