You could try running PhotoRec (or TestDisk) from a Linux CD/DVD as the one
recommended in this page:
http://www.cgsecurity.org/wiki/Damaged_Hard_Disk
There is also Ubuntu-rescue-remix as described here:
https://help.ubuntu.com/community/DataRecovery/
Another choice, could be Fedora
http://spins.fedoraproject.org/security/#downloads
and there is a long list of other options.
If running from Windows, run the programme As Administrator.
Do not run from the same disk you are trying to recover.
Have plenty of storage space for the files you are trying to save.
As the screen shot you uploaded reads: Press "s" to disable al file families,..."
Then select the families that you are after. Like in your case, text files or from
that family (for instance txt, ram, cgi, log, etc).
That wil make the programme work faster.
If running from Linux, run the programme as root.
To run as root, open a shell and type:
sudo -s
If you chose the Fedora security spin, type
su -
In either case you can follow that with
phototrec
to start running the programme
Best of luck