Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
long trip » longer trip, long tail, longer trips
trip tuan » trip quand
china als » china aus, china aids, china a
yang july » yang judy, yang jun
yang jui » yang judy, yang yi
wing hua » wang hua, ming hua, ying hua
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: long trip tuan china als ((((yang jui) OR (((yang xi) OR (yang di))))) OR (yang july)) wing hua ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "long trip tuan china als ((((yang jui) or (((yang xi) OR (yang di))))) or (yang july)) wing hua ;~".
• Adding a wildcard symbol may retrieve word variants: long trip tuan china als ((((yang jui) or (((yang xi) OR (yang di))))) or (yang july)) wing hua ;*.