Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
dong ping » dong sin, dong bin, dong jung
hua gene » human gene, a gene, hua ren
jiu cong » li cong
yan jiu » yang jie, yang jin, pang jiu
cong du » long du, cong shu, cong sun

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