Perhaps you should try some spelling variations:
china chang » chin chang, china zhang, china changqi
yuan china » tuan china, yunnan china, wuhan china
lang yan » wang yan, wang yang, zhang yan
yan yuan » yan guan, fang yuan, nan yan
yang jui » yang judy, yang yi
yang jie » yang jin, yang yi, yang jun
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 yuan china chang ((((yang jui) OR (yang di))) OR (((yang jie) OR (yang xi)))) cong shu ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan yuan china chang ((((yang jui) or (yang di))) or (((yang jie) or (yang xi)))) cong shu ;*.