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

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

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