Cases App shows your closed cases in Closed status. You cannot view the closed status by a simple search. However,  it is possible to view the closed cases, if you perform an advanced search by Case number and Status.
Steps to Find Closed Cases Using By Status
- Log in and access the Cases app from your universal navigation menu.
 
- Select Lists drop-down and then click on By Status. Select Closed status from the left navigation panel. Manage statuses through Settings →  Statuses.
 
- You can view the closed cases as shown in the image below:
 
Advanced search
- Click on the tiny down arrow in the Search field. 
 
- Enter Case# and choose Closed status, click on the Search icon. 
 
- You can view closed cases as shown in the image below:
 
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