Perhaps you should try some spelling variations:
wang yangming » wang yangming's, wang yanling, wang danning
wuhan china » tuan china, yunnan china
hoong chang » hoong ang, huang chang, joon chang
than china » tuan china, han china, can china
yuan chang » yuan cheng, huang chang, han chang
dan yang » daun yang, tan yang, wang yang

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: wang yangming ((than china) OR (wuhan china)) dan yang ((hoong chang) OR (yuan chang)) ha ;~.
• Adding a wildcard symbol may retrieve word variants: wang yangming ((than china) or (wuhan china)) dan yang ((hoong chang) or (yuan chang)) ha ;*.