Regaining my private key which is only 32 bits letters and figures and figures

[songiso137]

When I was creating my Etherwallet and copied my private key I did not click on the private key to give me more other bits, I only copied 32 bits which were displayed there. How do I complete to regain the whole private key? Which link can I use to insert my etherwallet to give me the entire private key? I have my etherwallet with it is intact.