Prepare the macaroni noodles according to the box instructions on the stovetop and drain. Cook time is 9 mins.
Turn on Instant Pot to SAUTE. Brown onion and garlic in some oil. Brown chicken for a few minutes (doesn't have to be fully cooked). Remove chicken to start the deglazing process.
Deglaze bottom of pot by adding a little of the water or broth. Using a wooden spoon, stir bottom of pot to help the "good bits" lift off the bottom.
Return the chicken to the pot. Add the chicken broth, soy sauce, fish sauce, chicken bouillon, chicken broth and Vienna sausages to the pot.
Close the Instant Pot lid and turn the knob to seal.
Cook on MANUAL function, 5 minutes. Once done, let sit for 5 minutes (NPR natural pressure release) before turning knob to quick release (QR).
Turn pot on to SAUTE. Bring the pot to a light boil and add the evaporated milk. Then, add the cooked macaroni noodles. Add veggies.
Season with more salt and add pepper. Serve with love.