The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "observed" appeared
2016-09-08 : Introductory statement to the press conference (with Q&A)2014-12-22 : Interview with Wirtschaftswoche
2014-05-15 : Growth challenges for Asia and Europe
2011-10-10 : Contagion and the European debt crisis
2010-10-07 : Introductory statement with Q&A