In similar threads people have recommended inserting Google Analytics code to master pages, or replacing RoboHelp's search with an external product called Zoom Search. But I'd prefer not to do either of those. Does anyone have experience with this?
To add to what Stefan has said, Google Analytics is about what pages have been accessed rather than the search that lead to them. Zoomsearch is another way of searching that is perhaps less necessary as RoboHelp's search has improved over time. I believe it can be configured to show what the searches were but I doubt it gives the results it returned.
See www.grainge.org for free RoboHelp and Authoring information.