I'd be interested to know why the puppy was anemic.
Did the person who had the puppy before you (Breeder?) give regular deworming?
India may have different diseases I'm not aware of.
Where did the puppy come from? Did you see the mother? Were the others healthy?
Was your puppy's health guaranteed?
Swollen thyroid and paws doesn't seem like a typical reaction to any vaccine or illness.