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 jin » yang jie, yang jun, ying jin
jin song » jie song, john song, kim song
song siu » kong siu, wong siu, song shin
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 jin song siu ;~.
• 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 jin song siu ;.
• Adding a wildcard symbol may retrieve word variants: ((dong yang) or (wang yang)) ka ((hua gene) or (a gene)) yang jin song siu ;*.