Perhaps you should try some spelling variations:
human gender » bhutan gender, german gender, human genome
human gene » human genome, human bone, human genetic
wang yang » wang yan, wang liang, wang yanling
shang hai » shang kai, dang hai, chang ha
yang min » yang mind, tang min, yang lin
yang jin » yang jie, yang jun, ying jin
yang yi » yang di, yang xi, yang jui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yi ((human gene) or (human gender)) ((yang min) or (yang jin)) shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yi ((human gene) OR (human gender)) ((yang min) OR (yang jin)) shang hai ;.
• Adding a wildcard symbol may retrieve word variants: wang yang yi ((human gene) or (human gender)) ((yang min) or (yang jin)) shang hai ;*.