The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "south" appeared
2019-06-12 : Welcome remarks2015-01-15 : Interview with Die Zeit
2013-12-30 : Interview with Der Spiegel
2012-10-29 : Interview with Der Spiegel
2012-03-23 : Interview with Bild Zeitung