Perhaps you should try some spelling variations:
yuan using » plan using, mean using, san using
using data » missing data
human gene » human genome, human gender, human bone
gene yang » gene bank
yang yang » wang yang, wang yan
wong shiu » wong siu, cong shu, song shin
long ago » long arm

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: yuan using data human gene yang yang ((long ago) OR (wong shiu)) ;~.
• Adding a wildcard symbol may retrieve word variants: yuan using data human gene yang yang ((long ago) or (wong shiu)) ;*.