The scientific name of a milksnake is : Lampropeltis triangulum. There are 25 subspecies of milk snake.
There is no snake found called corba, but there is the cobra snake. If you are looking for a scientific name, you can use Elapidae which refers to the family of snakes.
The red bellied black snake scientific name is Pseudechis porphyriacus
Snakes are in the suborder Serpentes. Beyond that scientific classification such as the typical binomial name depends on the kind of snake.
The scientific name for the puff faced water snake is Homalopsis buccata.
A regular snake in general doesn't have a scientific name. Only distinct snakes have scientific names, like the Angolian garter snake is Elapsoidea Semiannulata.
The large snake
A Snake eating snake
The scientific name for the King cobra is Ophiophagus hannah