Perhaps you should try some spelling variations:
dong yang » dong hoang, yang yang, dan yang
wang yang » wang yan, wang liang, wang yanling
gene yang » gene bank
hong than » hong tan, long thanh, hong hai
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
hong ghi » zhong zhi, hong g, hong hai

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

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