Perhaps you should try some spelling variations:
kang minah » sang minh
yang yang » wang yang, wang yan
song ming » song bing, gong min, jong min
hua gene » human gene, a gene, hua ren
song min » gong min, jong min, song jin
cong van » congo can, duong van, cong 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 ((((song ming) or (song min))) or (kang minah)) ((cong shu) or (cong van)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ya hua gene ((((song ming) OR (song min))) OR (kang minah)) ((cong shu) OR (cong van)) ;.
• Adding a wildcard symbol may retrieve word variants: yang yang ya hua gene ((((song ming) or (song min))) or (kang minah)) ((cong shu) or (cong van)) ;*.