No, spay and neuter surgeries are completely irreversible. So, if the vet who spayed your dog did the job correctly, you will not be able to breed her.
Sterilization surgeries in animals are different from those in people. Humans typically undergo tubal ligations or vasectomies. In these surgeries, the gonads (ovaries or testicles) are left in the body. Because of this, in some circumstances people who have undergone these procedures can still conceive children.
As per Dogster.com, female dogs undergo ovariohysterectomies (known as spaying), in which the ovaries and uterus are removed. Removal of the gonads makes pets irreversibly sterile.
Spaying or neutering your dog is an important part of responsible pack leadership. It not only helps keep your dog safe from a number of medical issues, but it also helps reduce overpopulation. Here are 12 things you need to know about spay/neuter from Cesarsway.com.