Perhaps you should try some spelling variations:
czechia germany » czech german
germany gender » german gender, germany under, germany der
wing yanling » wang yanling, wang yangming
task min » task cil
task ii » task cil
hong ng » hong kong, hong jong, hong hong
kong a » kong _, kong sar, kong yam

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: wing yanling czechia germany gender ((task min) OR (task ii)) ((kong a) OR (hong ng)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yanling czechia germany gender ((task min) OR (task ii)) ((kong a) or (hong ng)) ;~".
• Adding a wildcard symbol may retrieve word variants: wing yanling czechia germany gender ((task min) OR (task ii)) ((kong a) or (hong ng)) ;*.