It looks like you may need to define a "_rec_name" for your custom model. That will be used as the default display name for records of that model. You could always define a "name_get" method if you want a more custom display name.

So if the name you want to see for those records is "description" field, you would see something like this on your "cour.modl" model:

class CourModl(models.Model):
    _name = 'cour.modl'
    _rec_name = 'description'

    description = fields.Char('Description')