Perhaps you should try some spelling variations:
dong hoang » hong hong
dong wang » dong yang, hong wang, dong jung
hua gene » human gene, hua ren, hy5 gene
ying jin » yang jin, jing ji, yang jie
wong siu » wong shiu, kong siu, wong sau
a gene » a genre, a gender, a gentle
yan ji » yan jiu, ban ji, pan ji

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((dong wang) or (dong hoang)) ((hua gene) OR (a gene)) ((yan ji) or (ying jin)) wong siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((dong wang) OR (dong hoang)) ((hua gene) OR (a gene)) ((yan ji) OR (ying jin)) wong siu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((dong wang) or (dong hoang)) ((hua gene) OR (a gene)) ((yan ji) or (ying jin)) wong siu ;".
• Adding a wildcard symbol may retrieve word variants: wang ((dong wang) or (dong hoang)) ((hua gene) OR (a gene)) ((yan ji) or (ying jin)) wong siu ;*.