Well apart from adding some marines and dropping the land raiders what he need to do is concentrete the forces.
Pick a flank and smash it up. Don\'t get caught fighting along a battle line get local superiority and use it.
It is a nasty elite list but hordes will pull it down.
I personally don\'t like land raiders they are too many points.
I would drop one of them and teleport the terminators in and spend the points on more terminators.