Perhaps you should try some spelling variations:
german gender » german lander, germany under, german border
wan handling » when handling, why handling, grain handling
human gender » bhutan gender, human gene, human genome
handling a » handling _, handling data, behandling av
sang mich » sang minh
mich dann » ich dann, mich das
dann hai » dang hai, dann hat, dann kam

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan handling a ((human gender) OR (german gender)) sang mich dann hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan handling a ((human gender) OR (german gender)) sang mich dann hai ;*".