The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "distributional" appeared
2018-10-26 : Central bank independence2017-10-18 : Structural reforms in the euro area
2016-11-30 : The productivity challenge for Europe
2016-10-25 : Stability, equity and monetary policy
2016-09-28 : Researching the Macroeconomic Policies of the Future
2015-05-14 : The ECB's recent monetary policy measures: Effectiveness and challenges