Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
gene sang » lee sang, gene bank
yang hua » wang hua, yang hui, ying hua
hua gene » human gene, a gene, hua ren
min hong » amin hong, min hyoung, min jeong
tin hong » tan hong, kia hong, thi 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 yang hua gene sang ((min hong) OR (tin hong)) w ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wan) yang yang hua gene sang ((min hong) OR (tin hong)) w ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or wan) yang yang hua gene sang ((min hong) OR (tin hong)) w ;*.