Perhaps you should try some spelling variations:
china plain » china main, china gain, china grain
china land » china hand, china's land, china brand
wang yuan » wang yuhan, wang yan, fang yuan
yuan wang » yan wang, yuan kang, yuan chang
dang hari » dang hai
yang lin » yang jin, wang lin, yang li
yang jun » yang jui, pang jun, yang jin

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 plain)) ((yang lin) OR (yang jun)) dang hari ;~.
• Adding a wildcard symbol may retrieve word variants: wang yuan wang ((china land) or (china plain)) ((yang lin) or (yang jun)) dang hari ;*.