to no effect
US /tə nō ɪˈfekt/
UK /tə nō ɪˈfekt/

1.
sin efecto, en vano
without producing the desired or intended result
:
•
They tried to persuade him, but to no effect.
Intentaron persuadirlo, pero sin efecto.
•
All her efforts were to no effect.
Todos sus esfuerzos fueron en vano.