You can have up to 5 active extended searches. If you want to run additional searches, then you must first pause or delete an existing active extended search.
Note: To prevent overwhelming results, searches are automatically paused if there are 100 unreviewed search results. Searches are also paused when they return fewer than 5 results.
From the left navigation menu, select
[Discover] → Extended Search → My Searches.Hover your cursor over the desired search.
Select
[More], then select Pause or Delete. A previously paused search can also be resumed from this menu.Paused searches won't return new results, but you can continue to view old results.
If you delete a search, then both the search and any results it returned will be deleted.
Review the confirmation message, then select OK to proceed.