|Nothing came up because you have the syntax backward. Search for *.doc and/or *.dot. You posted .*dot. |
You must have some files on the hard drive with either of those extensions. The * is called a wild card. It is substituted for the name of a file and should find ALL files with the doc or dot file extension, which is what MS Word uses on files your create and save.
Be sure to log in as the same user you were when you created the files originally.