Perhaps you should try some spelling variations:
green yunnan » green human
yunnan china » urban china, tuan china, wuhan china
long green » going green, long grain
china als » china aus, china aids, china a
yang july » yang jui, yang jun
yang yi » yang di, yang xi, yang jui
wang » wing, 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: long green yunnan china als ((((yang judy) OR (yang yi))) OR (yang july)) (wang OR wan) hua ;~.
• Adding a wildcard symbol may retrieve word variants: long green yunnan china als ((((yang judy) or (yang yi))) or (yang july)) (wang or wan) hua ;*.