Add the remaining 2 teaspoons oil to the skillet. Add the spring onion trimmed, cut into 2-inch segments and julienned (about 1 cup) and cook, stirring frequently, until lightly browned, 2 to 3 minutes. Add the ginger and turmeric and cook, stirring frequently, 1 minute. Add the carrot, snow peas and green peas and cook, stirring occasionally, until crisp-tender, 3 to 4 minutes. Transfer the vegetables to a bowl and cover to keep warm.