Alexban,
there are non czech/non polish speaking foreigners in CSA/LOT as there are non mother tongue pilots in most EU carriers apart those very few who can still afford in-house ab initio academies like LH or KL.
Limiting professional workforce on the basis of secondary languages isn't economically feasable for any company that wants to be competitive in this business; so that you know one of the above mentioned carriers has even taken on non speaking foreigners who paid their own type ratings.
As far as Romania is concerned it isn't obviously a top spot, it's a poor country with one of the lowest living standards in the european area.
This should be clearly stated when it comes to giving fair suggestions to a fellow pilot looking for relocation info here; national pride should stay out of the discussion.