Perhaps you should try some spelling variations:
human china » tuan china, wuhan china, han china
china wang » china yang, china chang, china zhang
yan human » than human, non human, von human
yang lin » yang jin, wang lin, yang liang
zong hai » hong hai, dang hai, long han
yang li » yang di, yang xi, yang yi

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 yan human china wang ((yang li) OR (yang lin)) zong hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan human china wang ((yang li) or (yang lin)) zong hai ;*.