If we mother, and 3 sons are posible to be granted emmigrant visa at Canda, Australia, New Zealand

I was born January 19, 1960. My children are 3 males. The eldest is twins. They are born April 26, 1981. The youngest is September 10, 1994. Kindly find out if we mother and children is possible of migrating either at Australia, Canada or New Zealand.