Show Search Bar
This simple yet highly effective search tool appears in the top left of the Object Manager. It does not select objects. Rather, it filters which objects are displayed.
To use the search bar, simply enter some text. All objects whose name includes at least part of the text will be shown. The search is not case-sensitive. Click on the X button to delete the search text. This switches off the filter's effect and all items in the scene will be displayed (unless hidden by other filters or the path bar).