Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
than china » tuan china, han china, can china
boon chong » boon siong, joon chang
daun yang » du yang, tan yang, un yang
chong hai » hong hai, chong nam, chong wan
dan yang » tan yang, wang yang, yang 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's ((than china) OR (wuhan china)) ((dan yang) OR (daun yang)) boon chong hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang yangming's ((than china) or (wuhan china)) ((dan yang) or (daun yang)) boon chong hai ;*.