Perhaps you should try some spelling variations:
wang shiyong » wang hyoung
human gene » human genome, human gender, human bone
wang yang » wang yan, wang liang, wang yanling
gene ping » gene mapping
ping john » king john, kong john, wong john
wong sau » wong sam, wong shiu, wong lai
wong siu » wong shiu, kong siu, wong siew

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: wan ((wang shiyong) OR (wang yang)) human gene ping john ((wong sau) OR (wong siu)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan ((wang shiyong) or (wang yang)) human gene ping john ((wong sau) or (wong siu)) ;*.