Why I can't say: Món gà voi món cá.
"voi" is "with", I believe
Should be, if you use 'hay' for với.
EDIT. Just tested it, and it takes 'món gà hay món cá'
thịt gà hay cá
với is "and" or "with". ... I think...
why no classifiers? Not necessary? Because this is general, not specific? Really, an explanation included in the answer would be very helpful. So tedious to have to hunt or wait for someone else to clarify what should be told in the lesson.