Sorry but the software for 2014 has been retired and is not available nor is it supported. You could get the forms from the IRS to prepare by hand, or seek paid professional tax help.
https://www.irs.gov/forms-pubs/prior-year
Edited to add comment
Even if you find someone selling 2014 TurboTax software on eBay, etc. it will not help you. You will not be able to install necessary updates in order to use the software.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
