Complex sentence: In 1933, when he was 15 years old he ran away to Bombay to become a film star, and acted in eight films as a child star for the Wadia Film Company.
Split into simpler sentences: In 1933, when he was 15 years old, he ran away to Bombay to become a film star. There, he acted in eight films as a child star for the Wadia Film Company.