Hi,
We can also try to search for the Word backup file, in Word 2010, please do the following:
Start Word 2010.
Click the File menu, and then click Open.
Locate the folder in which you last saved the file.
In the Files of type list (All Word documents), click All Files. The backup file usually has the name "Backup of" followed by the name of the missing file.
Click the backup file, and then click Open.
You can also refer to this kb below to find the missing content of the document, it's written for the missing documents issue, you can also try the methods:
http://www.filerepairforum.com/forum/archives/archives-aa/winrar/536-rar-is-3x-larger-than-its-content