The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "transition" appeared
2020-11-21 : Interview with Börsen-Zeitung2019-01-11 : Tenth anniversary of the euro in Slovakia
2018-04-27 : Reflections on monetary policy in the euro area
2018-03-14 : Interview with Luxemburger Wort