Perhaps you should try some spelling variations:
guang guan » gan guan, huang juan, quan guan
yan guang » yang guang, yan guan, gan guan
guan rene » juan rene, glas rene
dong sign » dong sin, among sign, dong bin
yang jin » yang jie, yang jun, ying jin
yang xi » yang yi, yang jui
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 yan guang guan rene ((((yang jin) OR (yang xi))) OR (yang di)) ((cong shu) OR (dong sign)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan guang guan rene ((((yang jin) or (yang xi))) or (yang di)) ((cong shu) or (dong sign)) ;*.