Perhaps you should try some spelling variations:
dong hoang » hong hong
minh congo » minh cong, bind congo
yang hua » wang hua, yang jui, wang hui
ying hua » ming hua, wang hua, ying zhu
yang hui » yang jui, wang hui, yang muxi
gene yan » gene bank, ren yan, see yan
tin hong » tan hong, kia hong, thi hong

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 ((((yang hua) OR (ying hua))) or (yang hui)) gene yan ((tin hong) or (minh congo)) shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong hoang ((((yang hua) OR (ying hua))) OR (yang hui)) gene yan ((tin hong) OR (minh congo)) shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong hoang ((((yang hua) OR (ying hua))) or (yang hui)) gene yan ((tin hong) or (minh congo)) shu ;".
• Adding a wildcard symbol may retrieve word variants: dong hoang ((((yang hua) OR (ying hua))) or (yang hui)) gene yan ((tin hong) or (minh congo)) shu ;*.