Perhaps you should try some spelling variations:
dong nana » dong nan, dong yang
nana yaa » nan ya, nan yan, nanay a
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
hong shu » cong shu, tong shui, wong shiu
yaa hua » ya hua
yan jiu » yang jie, pang jiu

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

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