Not even the IRS keeps records that old ... only the last 7 years are available.  Why do you need the 2010 return ? 

TurboTax retains online tax returns for the current and prior 7 tax years, the same as the IRS.

The IRS only retains tax transcripts for the past 10 years - https://www.irs.gov/individuals/get-transcript

For a fee of $43 you can get a complete federal tax return from the IRS by completing Form 4506 - http://www.irs.gov/pub/irs-pdf/f4506.pdf