[JoeyP]

Since you said that the trainer has calmed them down but they don't do it for you there is something that you are either doing or not doing that lets them bark

What will work for you is to get them acclimatized to other dogs being around on walks
get a friend to help one with a dog
have your friend come from a distance
when your dogs start barking you turn ... and go in the opposite direction until they stop
you keep doing this and doing this until they allow the dog to come to them
once they tolerate the dog coming to them
make an effort to bring them to do dog parks where they will become used to other dogs