The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "quantitative" appeared
2016-01-30 : Interview with NRC Handelsblad2015-09-24 : Monetary policy lessons from the financial crisis: some remarks
2015-09-19 : Interview with NEUE ZÜRCHER ZEITUNG
2013-07-18 : Interview with Handelsblatt