Hi Kostya!

no sorry, can't say I have (native speaker ), but since you plan on doing the exam soon, just wanted to help.

Is er iemand hier die het CNaVT kreegde?
should be:
Is er hier iemand die het CNaVT gekregen heeft?
or much better:
Is er hier iemand die het CNaVT heeft behaald?

Gekregen indicates getting something (an object) from someone, while 'behalen' specifically indicates having received a certificate for passing an exam.

Call me a miereneuker (literal meaning: ant fu**ker - slang for someone who is overly precise), but I hope other people will correct my Russian mistakes as well (which for me as a starter, would probably mean a full time job for them ).