Perhaps you should try some spelling variations:
human china » tuan china, wuhan china, han china
yan human » than human, non human, von human
china won » china women, china wang, china who
yang lin » yang jin, wang lin, yang liang
zong hai » hong hai, dang hai, long han
yang li » yang di, yang xi, yang yi
wang » wing, 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 wan) yan human china won ((yang li) OR (yang lin)) zong hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang OR wan) yan human china won ((yang li) or (yang lin)) zong hai ;~".
• Adding a wildcard symbol may retrieve word variants: (wang OR wan) yan human china won ((yang li) or (yang lin)) zong hai ;*.