Perhaps you should try some spelling variations:
dong ganga » deng gang, dong yang, gong gang
human gene » human genome, human gender, human bone
ganga ya » gang yao
ya human » a human, das human, 2 human
yang jun » yang jui, pang jun, yang jin
yang xi » yang jui
yang yi » yang jui

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: dong ganga ya human gene ((yang jun) OR (((((yang xi) OR (yang yi))) OR (yang di)))) cong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ganga ya human gene ((yang jun) or (((((yang xi) OR (yang yi))) or (yang di)))) cong shu ;~".
• Adding a wildcard symbol may retrieve word variants: dong ganga ya human gene ((yang jun) or (((((yang xi) OR (yang yi))) or (yang di)))) cong shu ;*.