The webapp provides for each item the link on ECB's website.
Speeches for : Christine Lagarde, Luis de Guindos where "mature" appeared
2021-06-10 : Christine Lagarde, Luis de Guindos: Introductory statement to the press conference2021-04-22 : Christine Lagarde, Luis de Guindos: Introductory statement to the press conference (with Q&A)