The webapp provides for each item the link on ECB's website.
Speeches for : Benoit Coure where "sell" appeared
2016-08-16 : Further strengthening the resilience of financial plumbing2015-03-10 : Embarking on public sector asset purchases
2014-09-09 : Life below zero: Learning about negative interest rates
2013-01-16 : Ensuring the smooth functioning of money markets