The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "circumstance" appeared
2015-10-31 : Interview with Il Sole 24 Ore2015-03-31 : Accounts and accountability
2014-11-21 : Monetary policy in the euro area
2014-05-26 : Monetary policy in a prolonged period of low inflation
2013-06-18 : Opening remarks at the session “Rethinking the Limitations of Monetary Policy”