Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
yang yang » wang yang, wang yan
gene sang » lee sang, gene bank
sang minh » kang minah, anh minh, song min
ii human » i human, 2 human, 3 human
cong seo » hong seo, cong shu, von seo
cong van » congo can, duong van
cong sun » cong shu, wing sun
yang ii » yang di, yang xi, yang yi

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "yang yang ii human gene sang minh ((cong seo) OR (((cong van) OR (cong sun)))) ;~".
• Adding a wildcard symbol may retrieve word variants: yang yang ii human gene sang minh ((cong seo) OR (((cong van) OR (cong sun)))) ;*.