Perhaps you should try some spelling variations:
yang july » yang judy, yang jui, yang jun
china all » china fall, china als, china small
wang hui » wang hua, wang zhi, wang wei
cong va » cong van
4 china » 2 china
yang xi » yang jui
yang yi » yang jui
va 4 » cva 4, va 24, van 4

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: cong va 4 china all ((((((yang xi) OR (yang yi))) OR (yang di))) OR (yang july)) wang hui ;~.
• Adding a wildcard symbol may retrieve word variants: cong va 4 china all ((((((yang xi) or (yang yi))) or (yang di))) or (yang july)) wang hui ;*.