In a large pot, cook noodles in boiling water until tender, about 4 minutes. Drain noodles and transfer to a large serving bowl.
Heat oil in a large wok or frying pan over high heat. Add garlic, long beans, and chicken. Cook until chicken is slightly browned, stirring often, about 4 minutes.
Add fish sauce, broth, sugar, ginger, lime juice, and 1/4 cup each basil, mint, and green onions, stirring to combine. Bring mixture to a boil and pour over noodles. Sprinkle with remaining basil, mint, and green onions.
Note: Nutritional analysis is per serving.