The webapp provides for each item the link on ECB's website.
Speeches for : Jean-Claude Trichet where "strain" appeared
2011-06-16 : Interview with The Times2010-03-26 : An anchor of stability and confidence
2010-02-09 : Commentary on “Fifty Years of Monetary Policy: What Have We Learned?” by Adam Cagliarini, Christopher Kent and Glenn Stevens
2009-08-06 : Introductory statement with Q&A