Try reloading the search. I think there is an intermittent DuckDuckGo bug which can result in no results being displayed. I have seen it a few times, and reloading the page or resubmitting the search has always resulted in a page populated with results. Indeed, your submitted story link pulled up a full page of results for me.
Interestingly, when I click to Turn On "Region", it shows a bunch of results