Perhaps you should try some spelling variations:
gene sang » lee sang, gene bank
wang yang » wang liang, wang yanling
sang minh » kang minah, anh minh, song min
duong van » duong anh
hua gene » human gene, a gene, hua ren
cong seo » hong seo, cong shu, cong sun
cong van » congo can, cong sun
xi hua » xie hua, li hua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (wang yan)) xi hua gene sang minh ((cong seo) or (((cong van) OR (duong van)))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (wang yan)) xi hua gene sang minh ((cong seo) OR (((cong van) OR (duong van)))) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (wang yan)) xi hua gene sang minh ((cong seo) or (((cong van) OR (duong van)))) ;".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (wang yan)) xi hua gene sang minh ((cong seo) or (((cong van) OR (duong van)))) ;*.