On any map, you can search for existing placemarks, lines or tracks. Tap the search icon (magnifying glass) and enter a term into the search box and a list of results will appear below it. This search function can use either existing features on the map or OpenStreetMap to find what you are looking for (e.g. coffee shops). You can also use this search function from the Maps List to look for a specific map in your Maps List.
Select a matching result from the list. The selected result will automatically add to the map you are viewing and will appear under OpenStreetMap in the Map features list.