Perhaps you should try some spelling variations:
dong yang » dong hoang, yang yang, dan yang
wang yang » wang yan, wang liang, wang yanling
hua gene » human gene, hua ren, hy5 gene
yang jie » yang jin, yang di, yang jui
wong siu » wong shiu, kong siu, wong siew
wong sau » wong sam, wong shiu, wong lai
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: ((dong yang) or (wang yang)) ka ((hua gene) or (a gene)) yang jie ((wong siu) OR (wong sau)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (wang yang)) ka ((hua gene) OR (a gene)) yang jie ((wong siu) OR (wong sau)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (wang yang)) ka ((hua gene) or (a gene)) yang jie ((wong siu) OR (wong sau)) ;*".