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
song thin » song shin, song jin, song min
yang min » yang mind, yang jin, tang min
yang jun » yang jui, pang jun, yang jin

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