Perhaps you should try some spelling variations:
dong yang » dong hoang, yang yang, dan yang
wang yang » wang yan, wang liang, wang yanling
wong shiu » wong siu, cong shu, song shin
hua gene » human gene, hua ren, hy5 gene
yang jin » yang jie, yang jun, ying jin
hong shu » cong shu, tong shui, hong seo
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 yang) OR (wang yang)) fan ((hua gene) or (a gene)) yang jin ((hong shu) or (wong shiu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (wang yang)) fan ((hua gene) OR (a gene)) yang jin ((hong shu) OR (wong shiu)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) OR (wang yang)) fan ((hua gene) or (a gene)) yang jin ((hong shu) or (wong shiu)) ;".
• Adding a wildcard symbol may retrieve word variants: ((dong yang) OR (wang yang)) fan ((hua gene) or (a gene)) yang jin ((hong shu) or (wong shiu)) ;*.