Perhaps you should try some spelling variations:
liang ying » liang liying, zhang ying, jiang yajing
yang human » facing human
human gene » human genome, human gender, human bone
huang ying » huang jing, huang ting, huang yang
ying yang » yang yang, yin yang, ying chang
hong ghi » zhong zhi, hong g, hong hai
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: liang ying yang human gene huang ying ((hong ghi) OR (dang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: liang ying yang human gene huang ying ((hong ghi) or (dang hai)) ;*.