Perhaps you should try some spelling variations:
human gender » bhutan gender, german gender, human genome
human gene » human genome, human bone, human genetic
yang huei » yang hui, yang jui, wang hui
huei ying » hui ying, hoi ying
yang min » yang mind, tang min, yang lin
yang jin » yang jie, yang jun, ying jin
shin » skin, sein, thin

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: yang huei ying ((human gene) OR (human gender)) ((yang min) OR (yang jin)) song shin ;~.
• Adding a wildcard symbol may retrieve word variants: yang huei ying ((human gene) or (human gender)) ((yang min) or (yang jin)) song shin ;*.