That 33 points is a little misleading. Dallas only had 2 legit scoring drives on Cleveland. They had a punt return TD then a bunch of very short field FGs as shown:
5 plays, 17 yards--FG
4 plays, 1 yard--FG
6 plays, 14 yards--FG
6 plays, 10 yards--FG
That's where having to rely on ol man Ezekiel Elliot and Brandin 'concussed' Cooks shows up.