You can search for all of the help topics in the entire help manual that contain a word using the Search pane.
Step 1) Access the Search pane by clicking the Search tab along the top of the left pane.
If the Help Viewer's left pane is not showing the press the Show button on the toolbar. Click here for more on show/hide the left pane.
Step 2) Type in a word to search for and click the List Topics button. This will show all of the matching topics in the list as shown in the screen below.
Step 3) Select a topic from the list and click the Display button. You will see something like the window below.
Step 4) Select a different topic from the list and click the Display button.