Perhaps you should try some spelling variations:
yang ying » yang yang, yang jing, huang ying
gene sang » lee sang, gene bank
ying hua » ming hua, wang hua, ying zhu
hua gene » human gene, a gene, hua ren
min hong » amin hong, tin hong, min hyoung
thi hong » tan hong
wang » wing, lang

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 OR wan) yang ying hua gene sang ((min hong) OR (thi hong)) w ;~.
• Adding a wildcard symbol may retrieve word variants: (wang or wan) yang ying hua gene sang ((min hong) or (thi hong)) w ;*.