Perhaps you should try some spelling variations:
dong sind » dong sin, dong bin, dong ping
hua gene » human gene, hua ren, hy5 gene
ying jin » yang jin, jing ji, yang jie
jin ying » li ying
ying hua » ming hua, wang hua, ying zhu
a gene » a genre, a gender, a gentle
wang » wing, wan, lang

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

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