Heat up a wok on high heat and add the oil. Add the garlic into the wok and stir-fry until aromatic, follow by the Thai roasted chili paste or nam prik pao. Add the chicken and quickly stir fry, until the chicken is half cooked. Add the onion, green beans, carrot, green and red bell peppers, bird’s eye chilies and stir to combine well with the chicken. Add the sweet soy sauce and fish sauce, stir to blend well. (If you want your chicken to be a little saucy, you can add two tablespoons of water now.) As soon as the chicken and all ingredients are cooked through, dish out and serve immediately with steamed rice.