Heat vegetable oil in a large pan. Fry garlic and onion for 1 to 2 minutes. Add chicken breast, shitake mushrooms, and ground pepper and continue to fry for another 3 minutes.
Stir in soy sauce and fish sauce. Add chicken stock and bring it to a boil.
Add shrimps and carrots. Allow ingredients to cook for 2 minutes.
Then add noodles and cabbage. Allow noodles to cook and soften. Stir to get ingredients well mixed. This should take 4 to 5 minutes.
Add green onions. Turn off heat and serve immediately.