The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "signed" appeared
2019-10-28 : Farewell remarks2014-11-17 : Introductory remarks at the EP's Economic and Monetary Affairs Committee
2012-11-15 : The monetary policy of the European Central Bank and its transmission in the euro area
2012-10-24 : Opening statement at Deutscher Bundestag