There are a few different ways find a Managed document.
Go To: Menu
1. On the Global Navigation menu select Go To:
2. Choose from one of the options under the Documents menu
Documents by Category
1. On the Global Navigation menu select Promoted Documents by Category. Documents have been Grouped by Category
2. Select the option you wish to view
3. The library will present the documents matching your selection.
Search box
1. Navigate to the Document library then click inside the Search box on the SharePoint title bar.
2. Type the name of the file you want to search for, or contents from within the file. Press Enter.
3. SharePoint will return a list of matches for you.
Sort & Filter
1. Use any of the SharePoint Sort & Filter techniques to manipulate the library.