Turbotax and the IRS only keep like the last 6 or 7 years, so if you don't find them it's because they are gone permanently. you can get transcripts of those years free from the IRS but copies of the actual return cost $43 each. first check Turbotax. if you used multiple Turbotax accounts and can't remember the info to access them see this link
https://ttlc.intuit.com/turbotax-support/en-us/help-article/security-risk/account-recovery-request-t...
