Perhaps you should try some spelling variations:
human gender » bhutan gender, human gene, german gender
yala human » data human, malawi human
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
yang jin » yang jie, yang jun, ying jin
yaw min » kyaw min, law main
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong yang) OR (yang yang)) yala human gender ((yang jin) or (yaw min)) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (yang yang)) yala human gender ((yang jin) OR (yaw min)) hong yu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) OR (yang yang)) yala human gender ((yang jin) or (yaw min)) hong yu ;*".