Using a Subsearch to Refine Search Results
When you define a search that you want to use as a base for subsearching, make sure that Real Time (streaming) option is disabled and the search is not grouped.
You can use a subsearch to search within a set of completed search results. The subsearch is used to refine search results, without searching the database again.
This feature is not available for grouped searches, searches in progress, or in streaming mode.
The Original Filter pane specifies the original filters that are applied to the base search. The Current Filter pane specifies the filters that are applied to the subsearch. You can clear subsearch filters without restarting the base search. Click the Clear Filter link next to the filter you want to clear. If you clear a filter from the Original Filter pane, the base search is relaunched.
If you delete the base search criteria for saved subsearch criteria, you still have access to saved subsearch criteria. If you add a filter, the subsearch searches the entire database since the search function no longer bases the search on a previously searched data set.