Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
gene wang » wen wang
gene bank » gene banks, one bank, genomen bank
zhong tai » hong tan, hong hai, zhong zhi
dang hadi » dang hai
yang hua » wang hua, yang hui, ying hua

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 yang yang hua ((gene wang) OR (gene bank)) ning ((zhong tai) OR (dang hadi)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yang hua ((gene wang) OR (gene bank)) ning ((zhong tai) or (dang hadi)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang yang hua ((gene wang) OR (gene bank)) ning ((zhong tai) or (dang hadi)) ;*.