I've deleted my OS X Yosemite from the Purchased section in APP Store

Is there a way to get it back?

I've a MBP Early 2009, with the "El Capitan" OS instaled, but for the second time it seems very slow, and after a reset and full installation of this OS X, I just want to migrate to the earlier "Yosemite" OS, but since it's no longer in my Purchased section where can I download it?