The TIFFA scan shows abnormalities in the brain. Scan done twice and showing same results, it must be right.
I suggest you should consult a specialist in Foetal medicine. They are available in most of the big cities which have a Medical College. Most of the brain anomalies are not correct-able after birth. So it becomes a very difficult situation when the baby is born.
Next Steps
Please consult a specialist in Foetal medicine in your city for his opinion if some treatment can be offered to the foetus now or after delivery.