To search for one or more of your existing diagrams in ‘Diagrams View,’ locate the ‘Find a Diagram…’ text box to the top right of your ‘All Existing Diagrams’ panel (located below ‘Most-Recently Modified Diagrams’).
Type in your search keyword to find your desired diagram by Name, Number, or Description words. Then, hit ‘Enter’ on your keyboard or click the button to the right of your entered text to display your search results.