Can l file a tax return for the year 2014 after all this time?

See the following: https://turbotax.intuit.com/tax-tips/irs-tax-return/how-do-i-file-back-tax-returns/L535BxMms 

The IRS requires you to go back and file your last six years of tax returns to get in their good graces. Usually, the IRS requires you to file taxes for up to the past six years of delinquency, though they encourage taxpayers to file all missing tax returns if possible. Payment plans can be arranged with the IRS.

To claim any refund due, taxpayers must file their 2014 federal tax return by April 17, 2018. There is no penalty for filing a late return for those receiving refunds. ... If they do not file a tax return within three years to claim a refund, the money becomes the property of the U.S.