Place beans in tap running water and wash thoroughly.
In a casserole, boil at least 2 liters of water and add mung beans. Simmer it at least 20 minutes roughly until soft. Add water if it is necessary.
In a shallow cooking pan, add a little bit of oil and fry dilis until it turns to brown. Set aside.
In a big wok, heat cooking oil and saute garlic, onion, and tomato. Keep stirring until nice fragrance occurs.
Pour green beans, string beans, and sliced squash. Simmer it for at least 5 minutes.
Add fried dilis, coconut milk, and spinach. Let it boil for another 5 or more minutes until they all cook.
Season it with fish sauce.