Perhaps you should try some spelling variations:
dong hoang » hong hong
alan hua » alan h, alan a, tan hua
hua gene » human gene, a gene, hua ren
yang jie » yang di, yang jui, yang xi
ying jin » jing ji
yang jin » yang jun, shang jin, wang jing
hong shu » cong shu, tong shui, wong shiu
yan jiu » 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 hoang alan hua gene ((((yan jiu) or (yang jie))) or (((ying jin) or (yang jin)))) hong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong hoang alan hua gene ((((yan jiu) OR (yang jie))) OR (((ying jin) OR (yang jin)))) hong shu ;.
• Adding a wildcard symbol may retrieve word variants: dong hoang alan hua gene ((((yan jiu) or (yang jie))) or (((ying jin) or (yang jin)))) hong shu ;*.