1. Cook noodles according to package directions, omitting salt and fat. Drain and rinse under cold water; drain. Place in a medium bowl. Add radishes and next 6 ingredients (through fish sauce); toss well.
2. Combine oil, ginger, garlic, and chiles in a large skillet over low heat; cook for 2 minutes. Increase heat to medium-high; cook an additional 1 minute or until garlic begins to brown. Add snow peas and salt to pan; cook 3 minutes or until crisp-tender, stirring occasionally. Add snow pea mixture to noodle mixture; toss well. Sprinkle with nuts.