Hello,
Thanks! That is a great answer. My question was not more why is not my subdomain ranking but why is not my example.com domain ranking for English queris in Czech SERP.
This would mean that if a person googles in google.cz "Cars in Czech" they should get my example.com domain and if they google in Czech language they get my cs. domain.
My issue is that example.com is ranking everywhere except in google.cz for english terms. (subdomain is not an issue, its ranking). I analyzed the keyword difficulties and this is not an issue. English terms in google.cz are lot easier in KD than in google.com for example...