Perhaps you should try some spelling variations:
human gender » bhutan gender, human gene, german gender
yang min » yang mind, yang jin, tang min
ying jin » yang jin, jing ji, yang jie
hong hai » shang hai, zhong tai, dang hai
hua ren » hua chen
yan xi » yang xi, yan zi
wang » wing, wan, lang

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

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