The webapp provides for each item the link on ECB's website.
Speeches for : Jorg Asmussen where "responsibility" appeared
2013-11-08 : The public and the private banking union2013-10-25 : Cooperation and diversity: principles for a stable euro area
2013-04-25 : Saving the euro
2012-07-17 : Building deeper economic union: what to do and what to avoid