Reviewed by GREG KING Director: Rodd Rathjen Stars: Sarm Heng, Thanawut Kasro, Mony Ros This Australian/Cambodian co-production was Australia’s official entry for the Best Foreign Language Oscar in 2019. The dialogue is a mix of Khmer and Thai language. Buoyancy is a grim and gruelling and thought-provoking drama that deals with the issue of people smuggling and slavery within the Thai …