Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
ran yuan » yan yuan, fang yuan
wang wei » zhang wei, wang zhi
wei chen » wei shen, frei chen, jui chen
yang jie » yang jin, yang di, yang jui
yang xi » yang di, yang jui
yang yi » yang di, yang jui

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: ran yuan wang wei chen ((((yang jie) OR (yang xi))) OR (yang yi)) dang (hai OR haji) ;~.
• Adding a wildcard symbol may retrieve word variants: ran yuan wang wei chen ((((yang jie) or (yang xi))) or (yang yi)) dang (hai or haji) ;*.