The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "perception" appeared
2017-08-25 : Sustaining openness in a dynamic global economy2017-05-24 : The interaction between monetary policy and financial stability in the euro area
2016-09-30 : Interview with ARD Tagesthemen
2013-10-06 : Interview on the EUROPEAN CULTURAL DAYS of the ECB – Latvia 2013