You can follow the steps below to search across different sections or components simultaneously -
- Enable the toggles of components that you want to search.
- Enter the search term in the input field and click Search.
- The results shown are the results returned from the search of the selected components.


PS: View Metadata Search, Salesforce quick search app on Salesforce AppExchange: https://appexchange.salesforce.com/appxListingDetail?listingId=a0N30000009wgF7EAI