Try looking for words that are unique to the missing part of the file
with a tool like Disk Investigator
(
http://www.theabsolute.net/sware/dskinv.html) which can search the raw
data on the drive. It's possible the text is still there from another
temporary version of the file. Disk Investigator can let you find it
and then string several pieces togethor in one new text file.
How to use the program:
1.Do a search by clicking the search button the lower right corner and
keep the view in the default "Disk" mode.
2.Search the whole Disk (It might take an hour, but if you are find ing
too many examples stop the search and try to find words more unique to
your file.
3. Once you have found some suspect clusters with good text, select
them by clicking on the "Located Item Button." This will open the
cluster with your text.
4. Click "Add this cluster to memory which I think will keep a running
total on the clipboard, or Save it to Disk.