Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
gene bank » gene banks, one bank, genomen bank
hua gene » human gene, a gene, hua ren
hong ghi » zhong zhi, hong g, hong hai
yang ka » yang fan, yang yao
bank di » bank die, bank do, bank adb
hong yu » wong yue
ka hua » ya hua, ka chuan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: yang yang ka hua gene bank di ((hong ghi) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ka hua gene bank di ((hong ghi) OR (hong yu)) ;.
• Adding a wildcard symbol may retrieve word variants: yang yang ka hua gene bank di ((hong ghi) or (hong yu)) ;*.