 Complete the following phrase:  He made his Telugu directorial debut with Neethi Nijayithi 1972. He then directed social problem films like Dikkatra Parvathi 1974, which won the National Film Award for Best Feature Film in Tamil, Filmfare Award for Best Film  Tamil for that year, and Tharam Marindhi, which won Nandi Award for Best Feature Film, both of which were premiered at International Film Festival of India and the Moscow Film Festival. The 1987 silent film, Pushpaka Vimana gained international acclaim, including 