Perhaps you should try some spelling variations:
hua gene » human gene, a gene, hua ren
yang xie » yang jie, yang yi, yang jin
wong sau » wong sam, wong siu, wong shiu
wan yan » wang yan, nan yan, wai yan
yan tan » tan tan, yan clan, yan guan
tan hua » tuan hua, wang hua, tan chia
yang xi » yang yi, yang jui

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 hua gene ((yang xi) or (((yang xie) or (yang di)))) wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan tan hua gene ((yang xi) OR (((yang xie) OR (yang di)))) wong sau ;*.