The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "observe" appeared
2017-11-06 : Opening remarks2015-09-09 : The ECB's asset purchase programme: the impact so far
2015-04-16 : Price stability: a sinking will-o'-the-wisp?
2014-04-10 : The financial cycle and real convergence in the euro area