Perhaps you should try some spelling variations:
using human » being human
human gene » human genome, human gender, human bone
dan using » san using, plan using, mean using
wang dan » wang yan, wang ban, wang yidan
gene anh » gene bank, gene one
cong sun » cong shu, cong van, wing sun
von seo » von see, von seu, von sex

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 dan using human gene anh minh ((von seo) OR (cong sun)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang dan using human gene anh minh ((von seo) or (cong sun)) ;*.