01 - Cook the noodles according to package instructions. Drain, rinse under cold water to halt cooking, and set aside.
02 - In a small bowl, whisk together the soy sauce, oyster sauce, fish sauce, lime juice, and sugar until the sugar dissolves. Set aside.
03 - Heat 1 tablespoon of vegetable oil in a large wok or skillet over medium-high heat. Add the shrimp in a single layer and stir-fry for 2–3 minutes until they turn pink and are cooked through. Transfer to a plate and set aside.
04 - Add the remaining tablespoon of oil to the wok. Toss in the minced garlic and sliced chilies, stir-frying for about 30 seconds until deeply fragrant.
05 - Add the sliced bell pepper, trimmed snow peas, and most of the spring onions to the wok. Stir-fry for 2–3 minutes until the vegetables are crisp-tender.
06 - Return the seared shrimp to the wok, add the drained noodles, and pour in the prepared sauce. Toss everything together vigorously for 2–3 minutes, ensuring the noodles and shrimp are evenly coated and heated through.
07 - Transfer to serving plates and garnish generously with fresh coriander leaves, toasted sesame seeds, the reserved spring onions, and lime wedges. Serve immediately while hot.