Perhaps you should try some spelling variations:
yan yuan » yan guan, fang yuan, nan yan
yang yue » wang yue, yang yun, yang jui
tan yang » dan yang, tan ying, tan yong
hang hai » shang hai, dang hai, hong hai
yang xi » yang di, yang yi, yang jui
xi hang » xi zhang, xi kang, xi cheng
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 hyoung ((yan yuan) OR (yang yue)) tan yang xi hang hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang hyoung ((yan yuan) or (yang yue)) tan yang xi hang hai ;*.