Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
gene sang » lee sang, gene bank
sang minh » kang minah, anh minh, song min
duong van » cong van, duong anh
yang jui » yang judy, yang xi
cong seo » hong seo, cong shu, cong sun
yang yi » yang xi

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: wang ((((yang jui) OR (yang di))) OR (yang yi)) human gene sang minh ((cong seo) OR (duong van)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((((yang jui) or (yang di))) or (yang yi)) human gene sang minh ((cong seo) or (duong van)) ;*.