TurboTax does not have copies of your W-2's, only the information you entered or had imported. The TurboTax program has a W-2 Wage and Tax Statement (it gives all the information that was on your W-2); if you used the Desktop version you can switch to Forms Mode and print the statement. If you used the Online version you would need to print (or save your return as a PDF) your return with all the worksheets to see the W2 Wage and Tax Statement.
You can ask your employer for another copy, or you can fill out Form 4506-T (Request for Transcript of Tax Return), check Line 8 Form W-2, Form 1099 series, Form 1098 series, or Form 5498 series transcript, and mail in the form. The IRS can provide a transcript that includes data from these information returns.
http://www.irs.gov/pub/irs-pdf/f4506t.pdf
Or to order the transcript online by mail:
http://www.irs.gov/Individuals/Order-a-Transcript
You can also get a copy of your W-2s from the Social Security Administration, but there is a charge per copy.
https://faq.ssa.gov/en-us/Topic/article/KA-02501
