The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "margin" appeared
2019-03-27 : Monetary policy in the euro area2018-11-16 : The outlook for the euro area economy
2016-09-22 : Welcome address
2013-11-21 : Keynote address at the Süddeutsche Zeitung Führungstreffen Wirtschaft 2013