Could Dobby Have Been Saved?

None of them can probably heal such a fatal injury Dobby has suffered. In the book Hermione stuffed the beaded bag in her sock to save it. In the film, the snatchers got the beaded bag.

Why did no one save Dobby?

Also, Dobby's injury was so severe that there was very little time in which to save him. He and Harry landed somewhat far from Ron and Hermione so Hermione wouldn't have immediately known that she could/should look for her dittany in time to save him. Highly active question.

Do they bring Dobby back to life?

An angry Lucifer kills Bobby and Castiel when they interfere, and then sets his sight onto Dean. Sam is able to reassert control over his body, and uses the rings to imprison himself and Michael. With the Apocalypse over, God resurrects Castiel, who in turn brings Bobby back to life.