Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
using sar » using sat, using smart, using saber
using svr » using 4ir, using sat, using se
hua gene » human gene, a gene, hua ren
ka ying » ku ying, fan ying, gao ying
gene 1 » gene _, gene m, gene 6
1 leit » 1 left, 5 leit

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: (wan OR lang) ((ka ying) OR (yang yang)) hua gene 1 leit ((using sar) OR (using svr)) ;~.
• Adding a wildcard symbol may retrieve word variants: (wan or lang) ((ka ying) or (yang yang)) hua gene 1 leit ((using sar) or (using svr)) ;*.