Perhaps you should try some spelling variations:
dong nan » dong yang, dong sin, dong bin
hua gene » human gene, hua ren, hy5 gene
yang jin » yang jie, yang jun, ying jin
yang jui » yang judy, yang di, yang xi
nan yan » nan ya, wang yan, qian yan
hong ng » hong kong, hong jong, hong hong
a gene » a genre, a gender, a gentle

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

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