Soak the mushrooms in 1 cup hot water until softened. Slice and save the soaking liquid.
Finely chop the shrimp, garlic, onion, scallions, and carrot.
In a bowl, combine the ground pork, shrimp, chopped vegetables, egg, cornstarch, fish sauce, salt, and pepper. Mix until combined, then shape into small bola-bola.
In a pot over medium heat, sauté the ginger in oil until fragrant. Add the garlic and onion and cook until softened. Add the mushrooms and sauté for a few minutes.
Pour in the water and mushroom soaking liquid. Add the chicken base or bouillon and bring to a boil.
Gently add the bola-bola to the broth. Lower the heat, cover, and simmer until cooked through.
Add the zucchini and cook until just tender.
Add the misua and gently stir to separate the strands. Cook for about 2 minutes, then turn off the heat.