No you can't. The online product can only be used to prepare one tax return on each account. You can buy and download the CD/download product and install it on your computer to do the same thing you did when buying a disk from Target. You can complete an unlimited number of returns and efile up to 5 with one purchase.
Here is how to buy it from TurboTax: https://turbotax.intuit.com/personal-taxes/cd-download/
You can also look at buying and downloading it from other retailers where it may be less expensive. Some retailers sell versions without a state included so if you need to prepare a state return make sure it includes state.
