The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "designed" appeared
2020-11-02 : Legal aspects of the ECB’s response to the coronavirus (COVID-19) pandemic – an exclusive but narrow competence2016-06-23 : Monetary policy in the euro area: scope, principles and limits
2015-05-07 : Interview with La Vanguardia