Most of the time, Turbotax will automatically claim any credit you are entitled to. Do you think you should have gotten something you didn't? To get the child tax credit, you generally must earn enough money that you owe income tax, and you claim at least one qualifying child dependent. If you don't earn enough to pay taxes, you may still qualify for a partial credit but only if your income is earned from working (unemployment, investments, etc. doesn't count for the additional child tax credit.)
