Perhaps you should try some spelling variations:
gene yang » gene bank
yang yang » wang yang, wang yan
dong nan » dong yang, dong bin, dong cao
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
hong shu » cong shu, tong shui, wong shiu
hong yu » wong yue
sin » sign, sind, skin

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

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