Complex sentence: Davis's first success was as Charmaine "Schultzy" Schultz in the sitcom "The Bob Cummings Show" on NBC, twice winning the Emmy Award for Outstanding Supporting Actress in a Comedy Series out of four nominations for this role.
Split into simpler sentences: Davis's first success was as Charmaine "Schultzy" Schultz in the sitcom "The Bob Cummings Show" on NBC. She won the Emmy Award for Outstanding Supporting Actress in a Comedy Series twice out of four nominations for this role.