The deal he is going to offer to countries like Vietnam is to be part of a "club" of countries with special relationship with the US, and that will include accepting to tie up their currencies to the dollar and buying exclusively US weapons for their defense.
There is zero chance of that happening. None. Zilch.
There is no deal to be had here. Trump wanted to impose the largest tax hike in history to pay for massive tax cuts for your plutocrats. Everything else is bullshit.
In a couple of months Trump has firmly destroyed US leadership, and absolutely cemented China's ascendancy. All of the ridiculously specious "it's actually 4D chess and what he's really doing are..." is a riot in the context of the pure unadulterated stupidity coming from this administration.