Perhaps you should try some spelling variations:
ying human » being human, using human, ying hua
human gene » human genome, human gender, human bone
wang fan » wang yan, yang fan, wang ban
fan ying » fan xing, ran ying, tan ying
yang jie » yang jin, yang di, yang jui
wong sam » wong sau, wong lai, von sam
wong siu » wong shiu, kong siu, wong sau
yan jiu » yang jin, pang jiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang fan ying human gene ((yan jiu) or (yang jie)) ((((wong sam) or (kong sar))) or (wong siu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang fan ying human gene ((yan jiu) OR (yang jie)) ((((wong sam) OR (kong sar))) OR (wong siu)) ;.
• Adding a wildcard symbol may retrieve word variants: wang fan ying human gene ((yan jiu) or (yang jie)) ((((wong sam) or (kong sar))) or (wong siu)) ;*.