Perhaps you should try some spelling variations:
dong hoang » hong hong
dong yang » wang yang, dan yang, dong jung
yang yang » wang yang, wang yan
gene yang » gene bank
hua gene » human gene, a gene, hua ren
jin ying » li ying
tin hong » tan hong, kia hong, thi hong
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: ((((dong yang) OR (dong hoang))) or (yang yang)) ka hua gene yang ((jin ying) or (tin hong)) shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((dong yang) OR (dong hoang))) OR (yang yang)) ka hua gene yang ((jin ying) OR (tin hong)) shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dong yang) OR (dong hoang))) or (yang yang)) ka hua gene yang ((jin ying) or (tin hong)) shu ;".
• Adding a wildcard symbol may retrieve word variants: ((((dong yang) OR (dong hoang))) or (yang yang)) ka hua gene yang ((jin ying) or (tin hong)) shu ;*.