The webapp provides for each item the link on ECB's website.
Speeches for : Jean-Claude Trichet where "considerably" appeared
2011-09-23 : Preventing spillovers on the global economy2011-06-30 : Hearing at the Committee on Economic and Monetary Affairs of the European Parliament
2009-06-12 : The financial crisis and the response of the ECB
2009-05-25 : Integration and innovation - The Alpha and Omega of a successful retail payments market in Europe
2008-12-30 : Interview with the Börsen-Zeitung
2007-06-05 : International Monetary Conference Central Bankers panel