Advanced, Global Search for Timeline

We need a global search functionality that allows us to find keywords across the Timelines of ALL accounts simultaneously. For instance, I want to be able to search for "Competitor X" or "Feature Request Y" and see a single list of every customer and Timeline activity where that term was mentioned. The current search is confined to the specific C360 page you are on, which makes it impossible to identify cross-customer trends or systemic issues without manually checking every single account.