How do I search for the models without Nationality?

[Sophiel777]

Recently I've started making a list of models which I like and I've been going through Nationality when I was doing it.

However randomly I've found out that there is a number of models who don't have their nationality assigned.

For example, Ginebra Bellucci has her Nationality (Spain) assigned at the very top of her profile.

However if you were to search for Evia Rose, then you would notice that she doesn't have her Nationality assigned.

My question is this: How do I easily find all of the models without their Nationality assigned?

Also I know that it would've been quicker if I posted links but they don't allow me to.