The webapp provides for each item the link on ECB's website.
Speeches for : Jean-Claude Trichet where "discretion" appeared
2011-05-26 : The ECB's response to the crisis2011-03-18 : Reforming EMU: time for bold decisions
2010-02-09 : Commentary on “Fifty Years of Monetary Policy: What Have We Learned?” by Adam Cagliarini, Christopher Kent and Glenn Stevens
2009-03-23 : Interview with Wall Street Journal
2005-11-03 : Introductory statement with Q&A