One way of doing it is as follows:
- Attach to Word document Window
- Ctrl+g to bring up the GoTo Dialog (as shown below)
- Attach to the Find and Replace Window (test if this really needed)
- Alt+d to switch to the Find Tab
- Type in the word to be found
- Alt+i to Find In
- M to select Find in Main document
- Alt+R to open the Reading Highlight
- H to highlight all the found words