If you would like to change it only for one listview it might be possible with some CSS hacking. You should be able to remove the standard text by using display: none; for instance. Then add a text with a :before selector. Haven't tried this but it may be worth looking into.
The text a list view shows when it is empty is a system text, which can be configured in Project -> System texts -> List view -> Load more button caption. However, because it is a system text, all list views will show the same text.
Hi Richard,
If you want to change it for all the list view just change de text 'No items found' in your model (tools --> batch replace and search for this text)