However, it is important to point out that protein doesn't "cause" you to grow. You mentioned that you used X amount of protein from Myo and are not seeing many results.
Protein SUPPLEMENTS your diet, helping you to ensure you get the right amount of protein intake, in case you can't get enough from your staples (milk, steak, chicken, eggs, etc). Now different types of protein are better suited for different times (Whey after workouts, Casein in-between meals or at night). But, protein isn't going to make you grow, regardless of how many tubs of it you buy or what brand you utilize.
instead look at the following:
Macro nutrient intake (protein, carbs, fat). What are your ratios and total caloric intake.
Training, how often do you train, how long, and are you over training?
Rest, are you getting enough?