The ‘No items found’ is a systems text. You can change it here:
Note that changing it here will change it for all instances of you list-view widgets when the list is empty.
Alternatively, my team uses this empty list placeholder widget: Mendix Marketplace - Empty List Placeholder
you can also try ‘listview Message if Empty’ widget
listview Message if Empty : Pluggable web widget to display custom text in case a listview is empty
Thanks you guys, i’ll try out those widgets. To bad, that i can only accept one answer.