"You cannot buy anything here."
Translation:U kunt hier niets kopen.
Hey, someone's talking pretty bad about English! (lol) I think it's also easy for a beginner (like me) to confuse niet (not/negation) with niets (nothing), which I did several times before getting this right, i.e. trying to use kunt niet (can not) plus 'anything' rather than using niets. I got there in the end. :)