The webapp provides for each item the link on ECB's website.
Speeches for : Benoit Coure where "prosperity" appeared
2018-10-04 : The local impact of the ECB’s monetary policy2017-11-09 : Interview with France Info TV
2017-09-12 : Europe’s moment
2016-11-21 : Addressing Europe's economic and political challenges
2013-11-11 : Savers aren’t losing out