Creating compound alerts with Google Scholar

I think what you're looking for is a Google Scholar Alert for

+"robot" +("deep learning" OR "neural network") +("navigation" OR "localisation")

Google search operators include "OR", "-" and "+", and permit brackets, but do not use "AND".

Fun fact: The order of the terms will change the order of results (and content of previews). That matters if the hits exceed the number permitted by your alert.