Perhaps you should try some spelling variations:
china grain » china gain, china main, china plain
china land » china hand, china's land, china brand
yang liang » wang liang, yan liang, yang yang
wang yuan » wang yuhan, wang yan, fang yuan
yuan wang » yan wang, yuan kang, yuan chang
yang jin » yang jie, yang jun, ying jin
hai » hadi, haji, hari

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 yuan wang ((china land) OR (china grain)) ((yang liang) OR (yang jin)) dang hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang yuan wang ((china land) or (china grain)) ((yang liang) or (yang jin)) dang hai ;*.