Complex sentence: Armando was trapped under the truck, his father and other people did their best to save the people who were trapped and in the moment when Armando was with his family, his father look that Armando ´ s arm was destroyed.
Split into simpler sentences: Armando was trapped under the truck, his father did his best to save him. When Armando was with his family, his father look that Armando ´ s arm was destroyed.