Perhaps you should try some spelling variations:
human gender » bhutan gender, human gene, german gender
yan liang » yang liang, wang liang, you liang
hua chen » jui chen, yu chen, a chen
ying jin » yang jin, jing ji, yang jie
yan xi » yang xi, yan zi
wang » wing, lang
hai » hadi, haji, hari

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 OR wan) yan xi ((hua chen) OR (human gender)) ((yan liang) OR (ying jin)) dang hai ;~.
• Adding a wildcard symbol may retrieve word variants: (wang or wan) yan xi ((hua chen) or (human gender)) ((yan liang) or (ying jin)) dang hai ;*.