Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
wang liang » wang yang
than china » tuan china, han china, wuhan china
china chen » china shen, china china, china chang
yang jin » yang jie, yang jun, ying jin
wang li » wang lei, wang lin, tang li
hong yu » wong yue

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: ((yuan cheng) OR (wang liang)) than china chen ((yang jin) OR (wang li)) hong yu ;~.
• Adding a wildcard symbol may retrieve word variants: ((yuan cheng) or (wang liang)) than china chen ((yang jin) or (wang li)) hong yu ;*.