Now in the same wok, saute garlic and onions in the leftover shrimp oil over medium heat until soft and fragrant. Put in shredded chicken and sliced beef and stir fry for 1 min. Then, add in bell peppers, broccoli, carrots, cauliflower, snow peas and cabbage, cooking and stirring for about 5 mins. Add about 1 cup of chicken broth saved earlier, soy sauce and brown sugar. Mix well and simmer for 10 mins.