discover network using SSH and not ping?

Hi,
I wanted to know if it is possible to discover\scan new network by SSH ?
I have try to do this by setting in the Device Discovery:

Discovery Mode:reliable (scan each service)
and is the Service I have only tick the ssh as service to discover

but it’s only find me 3-4 devices on every “run”

am I doing it wrong?
is there something else I can do?