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
duong anh » dang anh, duong van
trong anh » trinh anh
yi human » i human, ii human, 3 human
cong seo » hong seo, cong shu, cong sun
2 human » 3 human

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 ((yi human) OR (2 human)) gene sang minh ((cong seo) or (((duong anh) or (trong anh)))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ((yi human) OR (2 human)) gene sang minh ((cong seo) OR (((duong anh) OR (trong anh)))) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang yang ((yi human) OR (2 human)) gene sang minh ((cong seo) or (((duong anh) or (trong anh)))) ;".
• Adding a wildcard symbol may retrieve word variants: yang yang ((yi human) OR (2 human)) gene sang minh ((cong seo) or (((duong anh) or (trong anh)))) ;*.