A little math question:

How many options are there for reaching the number 33 by adding with 6 numbers with the digits 0-9?

I mean, one of the options is: 5+5+6+6+8+3
another option is: 6+5+6+5+3+8
another option is: 4+7+2+9+9+2

How many options like these are there in total ?

Thanks.