Perhaps you should try some spelling variations:
human china » tuan china, wuhan china, han china
yang liang » wang liang, yan liang, yang yang
long thanh » luong thanh, long han, long trinh
yan human » than human, non human, von human
china law » china laws
yang jin » yang jie, yang jun, ying jin
wang » wan, 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: (wang OR wing) yan human china law ((yang liang) OR (yang jin)) long thanh ;~.
• Adding a wildcard symbol may retrieve word variants: (wang or wing) yan human china law ((yang liang) or (yang jin)) long thanh ;*.