Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
gene sang » lee sang, gene bank
sang minh » kang minah, anh minh, song min
hua gene » human gene, a gene, hua ren
cong seo » hong seo, von seo
cong sun » cong van, wing sun
yang ya » yang yao, yang yi, yang ka

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 ya hua gene sang minh ((cong seo) or (((cong sun) or (cong shu)))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ya hua gene sang minh ((cong seo) OR (((cong sun) OR (cong shu)))) ;.
• Adding a wildcard symbol may retrieve word variants: yang yang ya hua gene sang minh ((cong seo) or (((cong sun) or (cong shu)))) ;*.