Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
wong shiu » cong shu, song shin, wong sau
hua gene » human gene, hua ren, hy5 gene
yang jun » yang jui, pang jun, yang jin
wong siu » kong siu, wong sau, wong siew
yang ya » yang yao, yang yi, yang ka
a gene » a genre, a gender, a gentle

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: dong yang ya ((hua gene) OR (a gene)) ((yang jun) OR (yang di)) ((wong shiu) OR (wong siu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang ya ((hua gene) or (a gene)) ((yang jun) or (yang di)) ((wong shiu) OR (wong siu)) ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang ya ((hua gene) or (a gene)) ((yang jun) or (yang di)) ((wong shiu) OR (wong siu)) ;*.