Perhaps you should try some spelling variations:
ping wang » ping pong, hong wang
wang ying » wang yang, wang yong, wang jing
hua gene » human gene, hua ren, hy5 gene
bank jiu » bank aid, bank die
jiu wong » jiu cong, ji won, kie wong
wong sau » wong sam, wong siu, wong shiu
a gene » a genre, a gender, a gentle

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 ying ((hua gene) or (a gene)) bank jiu wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ping wang ying ((hua gene) OR (a gene)) bank jiu wong sau ;.
• Adding a wildcard symbol may retrieve word variants: ping wang ying ((hua gene) or (a gene)) bank jiu wong sau ;*.