Along with your supplements, also try to combine foods to create a complete protein in your vegetarian diet. Animal proteins often have a complete amino acid profile, but vegetarians have to plan a bit more. Brown rice and peas for example makes a complete protein, as pea is high in lysine but low in cysteine and methionine while brown rice is the opposite, low in lysine but high in the other two. Together they complete the amino acid profile. Another vegetarian combination for a complete protein is corn and black beans. There are many other combinations for vegetarians. It's not as good as an animal protein source but it's worth learning the various combinations to make a complete protein in your normal vegetarian diet.