Perhaps you should try some spelling variations:
human gender » bhutan gender, german gender, human genome
done using » line using, move using
human gene » human genome, human bone, human genetic
tong shui » tong hui, cong shu, gong hui
using ya » using a, using _, using 4d
yang jie » yang jin, yang di, yang jui
yan jiu » yang jin, pang jiu

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: done using ya ((human gene) OR (human gender)) ((yan jiu) OR (yang jie)) tong shui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "done using ya ((human gene) OR (human gender)) ((yan jiu) or (yang jie)) tong shui ;~".
• Adding a wildcard symbol may retrieve word variants: done using ya ((human gene) OR (human gender)) ((yan jiu) or (yang jie)) tong shui ;*.