The power steering (PS) pump belt is loosing. Or not enough PS pump fluid or pump itself. It is easy to diagnose. Ask a friend standing in fornt of your car and listen. If noise comes from left side of car when you turn the wheel, then check above parts which I mentioned.
Anyway, what Baoai said if you already called him?
Thank you very much. I checked the power steering fluid according your suggestion.The fluid was not enough so I bought some from Canadian tire and it worked. Thank you again!!