Perhaps you should try some spelling variations:
china gain » china grain, china main, china going
yang lin » wang lin, yang li, yang liang
yang jin » yang jun, ying jin, shang jin
yang jie » yang di, yang jui, yang xi
wan yan » wang yan, nan yan, wai yan
yan can » yan clan, man can, yan cong
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: wan yan can china gain ((yang lin) OR (((yang jin) OR (yang jie)))) dang hai ;~.
• Adding a wildcard symbol may retrieve word variants: wan yan can china gain ((yang lin) or (((yang jin) or (yang jie)))) dang hai ;*.