The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "talk" appeared
2018-05-18 : Interview with Bloomberg TV2017-06-28 : Interview with CNBC
2015-05-04 : Interview with Het Financieele Dagblad
2014-09-11 : Interview with Börsen-Zeitung
2014-09-08 : Understanding the yield curve
2012-04-04 : Introductory statement to the press conference (with Q&A)