Perhaps you should try some spelling variations:
human gender » bhutan gender, human gene, german gender
clan human » than human
wong shiu » wong siu, song shin, wong sau
das clan » das bilan, das land, das cern
yang jie » yang jin, yang di, yang xi
yang jui » yang judy, yang di, yang xi
wang » wan, lang

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: (wang OR wing) das clan human gender ((yang jie) OR (yang jui)) ((wong shiu) OR (cong shu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wing) das clan human gender ((yang jie) or (yang jui)) ((wong shiu) OR (cong shu)) ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or wing) das clan human gender ((yang jie) or (yang jui)) ((wong shiu) OR (cong shu)) ;*.