How do I find documents that are common to the results sets of 2 or more searches?
You can compare the results of up to 3 searches to find all the documents that occur in the result sets of all 3 searches using the Compare Search Results feature of the Research Map.
To do this:
- To start, from the top of any page, select History, then Research Map.
- In the left pane, filter the list of searches you want to see by selecting options from the View by and Date links.
- In the Trails list (also located in the left pane), select the checkboxes for the searches you want to view.
- In the map, select a results box () under a content type (such as, under Cases).
- Under Actions in the Content Type box that appears, select Select search to compare search results. The search will be added to the Compare Search Results box above the map.
- Repeat these steps to select up to two more searches for comparison (three total).
- Click the Compare Search Results (N) button. The Compare Search Results For dialog box appears.
- Click the Compare Search Results button. The comparison is opened.