Soak noodles in warm water and keep aside (approximately 3-5 minutes). Take a wok. Set heat at med-high. Add 2 tbsp cooking oil. Add garlic, shallots and stir for 10 seconds. Add shrimps and soya sauce. Fry till shrimps are done (about 1 min). Add the noodles and stir. Add sugar, vinegar/tamarind juice and fish sauce. Stir till noodles are fully cooked.