Perhaps you should try some spelling variations:
chan yang » chen yang, chan kang, china yang
yang yang » wang yang, wang yan
hong than » hong tan, long thanh, hong hai
kong saur » kong siu, kong your, wong sau
hua gene » human gene, hua ren, hy5 gene
a gene » a genre, a gender, a gentle
sar » sara, star

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

• Performing a fuzzy search may retrieve terms with similar spellings: chan yang yang ((hua gene) or (a gene)) hong than ((kong saur) OR (kong sar)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chan yang yang ((hua gene) OR (a gene)) hong than ((kong saur) OR (kong sar)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chan yang yang ((hua gene) or (a gene)) hong than ((kong saur) OR (kong sar)) ;*".