What are good supplements...vitamins and minerals to take in order to increase muscle size?

im a teenager lifting to eventually compete in bodybuilding in the next 1 or 2 years ive been working out for 3 years steadily and i want to get as big as possible as fast as possible i weigh 155 with 8% body fat and i want to be 175 -185 in the next 9 months or so i need to know what i should take to get bigger faster please help...thanks