Cast the net wider - When you are in a task of choosing something or someone, but not getting the correct piece out of it, then you need to broaden your choice, that is called casting the net wider.
1. Well, if we don't get a good piece for the contest, we will have to cast the net wider.
2. We are casting the net wider from not just bicycles but all the two wheelers for the exhibition.
3. Let us all cast our nets wider and choose good music.