Soak the noodles in boiling water for 5 minutes. Drain and cut into 1” to 2” pieces.
Heat the oil and stir-fry the garlic for a few seconds. Add the shrimp and beef and stir-fry breaking up any clumps. Add the carrots, scallions, zucchini, squash, oyster sauce and sambol oelek.
Mix the cornstarch and water in a small bowl.
Moisten the wraps a few at a time in hot water. Lay out on a damp towel.
Place approximately 2 tbsp of the filling in the centre of each wrapper. Fold the sides toward the middle and roll in a cigar shape. Brush the edge with cornstarch mixture to seal.
Deep-fat fry at 325°F until hot and crispy. Drain and serve with nuoc cham sauce.