TurboTax only retains tax returns for the prior 7 years, the same retention period as the IRS. So the 2014 tax return is no longer available.
You may be able to get a transcript from the IRS for the 2014 return. You will need to request a Tax Account Transcript using Form 4506-T from this IRS website - https://www.irs.gov/pub/irs-pdf/f4506t.pdf
