The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "safe" appeared
2018-09-05 : Creating an enabling environment for pan-European banks in the Banking Union2017-09-16 : Interview with De Tijd
2017-05-11 : The role of the ECB: prudence and responsibility in times of crisis
2017-03-29 : Have unconventional policies overstretched central bank independence? Challenges for accountability and transparency in the wake of the crisis
2015-11-06 : Monetary policy as information processing (slides from the presentation)