|As Derek pointed out .docx files are actually a compressed or zip file.|
If all else fails you may be able to recover some data by going into the compressed
file and extracting it by hand.
If you wish to try:
Open the .docx file with something like 7-zip, which is an open source archive program. You can also use Zip.
Once you have the file open, you should see three directory's and one file:
Open the directory: word
In the directory, there should be a file called: document.xml
This is the file that contains your data, along with a ton of markup stuff.
Copy this file to someplace you can work on it.
Next, use a text editor like Notepad to open the document.xml file.
You can start your search by looking for the string:
Do a Find, in the text editor.
The text following this string should be part of the data your looking for.
You will need to go through the whole document as all the pieces of your data are spread out all over and NOT all your data will be preceded by this string, so once you get to the bottom, check to make sure you got it all.
I'm not sure of the XML codes, but this has worked for me in the past. If you know XML you may have a better search method.
Best of luck.