In a pot or skillet, heat oil, sauté garlic and onions. Add the pork, shrimp, and fish balls. Combine together and cook until the meat is tender.
Add the cubed potatoes, carrots, and chicken broth. Mix well with the previous ingredients.
Add water, soy sauce, and dissolved cornstarch. Stir the pot to mix and combine the ingredients. Let it boil for about 15 minutes.
Throw in the rest of the ingredients (broccoli and snow peas). Cook for another 2 minutes.
Add salt and pepper to taste.
Serve hot with rice.