Can acne scars be removed by laser surgery or by using special creams?

yes

Laser resurfacing. This procedure can be done in the doctor’s or dermatologist’s office. The laser removes the damaged top layer of skin and tightens the middle layer, leaving skin smoother. It can take anywhere from a few minutes to an hour. The doctor will try to lessen any pain by first numbing the skin with local anesthesia. It usually takes between 3 and 10 days for the skin to heal completely.

Dermabrasion. This treatment uses a rotating wire brush or spinning diamond instrument to wear down the surface of the skin. As the skin heals, a new, smoother layer replaces the abraded skin. It may take a bit longer for skin to heal using dermabrasion — usually between 10 days and 3 weeks.
Fractional laser therapy. This type of treatment works at a deeper level than laser resurfacing or dermabrasion, Because fractional laser therapy doesn’t wound the top layer of tissue, healing time is shorter. Someone who has had this type of treatment may just look a bit sunburned for a couple of days