Perhaps you should try some spelling variations:
gene yang » gene bank
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
jin wong » jin song, john wong, jin ying
wong sam » wong sau, wong lai, kong sar
yan tan » yan clan, yan guan, yan wang
tan tan » tas tan, tin tan, tang tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan ((yan tan) or (tan tan)) hua gene yang jin wong sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan ((yan tan) OR (tan tan)) hua gene yang jin wong sam ;*.