Perhaps you should try some spelling variations:
human world » roman world
world huang » world hunger
yang human » facing human
huang jing » huang ting, huang ying, wang jing
yan yang » yang yang, yao yang, dan yang
hong ghi » zhong zhi, hong g, hong hai
wang » wing, wan, lang

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan yang human world huang jing ((hong ghi) OR (dang (hai OR hari))) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan yang human world huang jing ((hong ghi) OR (dang (hai OR hari))) ;*.