Perhaps you should try some spelling variations:
czechia germany » czech german
wan yanling » wang yanling, wang yangming, wang danning
czech brian » czech german
gender task » gender talk, gendered task, gender case
task min » task cil, task ii
hong g » hong ng, hong w, hong 7
kong » long, pong, ong

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: wan yanling ((czech brian) OR (czechia germany)) gender task min ((hong g) OR (hong kong)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan yanling ((czech brian) or (czechia germany)) gender task min ((hong g) or (hong kong)) ;*.