Perhaps you should try some spelling variations:
wang liang » wang yang
human gene » human genome, human gender, human bone
ping wang » ping pong, hong wang
yang jie » yang jin, yang di, yang jui
jie wong » jie song, kie wong, ji won
wong sau » wong sam, wong siu, wong shiu
hua ren » hua chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: ping wang liang ((hua ren) or (human gene)) yang jie wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ping wang liang ((hua ren) OR (human gene)) yang jie wong sau ;.
• Adding a wildcard symbol may retrieve word variants: ping wang liang ((hua ren) or (human gene)) yang jie wong sau ;*.