In a large bowl, combine vermicelli and enough hot water to cover. Soak according to package directions until softened. Drain well.
In a small bowl, combine oyster sauce, soy sauce, Chinese wine, and sugar. Whisk together until well-combined. Set aside.
In a bowl, combine chicken and cornstarch. Stir to fully coat and let stand for about 8 to 10 minutes. Drain well.
In a wide pan over medium-high heat, heat one tablespoon of oil. Add eggs and cook, breaking into pieces, until just set but still moist. Remove from heat and keep warm.
Add another 2 tablespoons of oil and heat. Add chicken and cook until color changes. Remove from heat and keep warm.
Add shrimp and cook just until color changes to pink. With a slotted spoon, remove from wok and keep warm.
Add more oil if needed. Add Chinese sausages and cook until lightly browned. With a slotted spoon, remove from pan and keep warm.
Add another 1 tablespoon of oil. Add onions and garlic and cook until softened.
Add bell peppers and cook until tender yet crisp.
Add rice noodles, chicken, sausages, and shrimp.
Add sauce mixture and sprinkle in curry powder. Using tongs, toss gently to combine until noodles are evenly colored.
Add the scrambled eggs and bean sprouts. Toss for another 1 to 2 minutes or until heated through.
Season with salt and pepper to taste. Serve hot.