Perhaps you should try some spelling variations:
gene sang » lee sang, gene bank
yang yang » wang yang
sang minh » kang minah, anh minh, song min
cong seo » hong seo, cong shu, cong sun
cong van » congo can, duong van, cong sun
a gene » a genre, a gender, a gentle
xi a » xi ai, i a, ii a

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (wang yan)) xi a gene sang minh ((cong seo) or (cong van)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang yan)) xi a gene sang minh ((cong seo) OR (cong van)) ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (wang yan)) xi a gene sang minh ((cong seo) or (cong van)) ;*.