"State of Vietnam referendum" . "rigged referendum in 1955" . "a rigged referendum" . . . . . . "deposed B\u1EA3o \u0110\u1EA1i in a fraudulent referendum" . . . "a referendum to remove the former Emperor" . . "after rigging a referendum" . "referendum in 1955" . "referendum on the future of the State of Vietnam" . . . "referendum" . "Referendum" . . "1955 South Vietnam referendum" . "winning a rigged referendum" . "1955 State of Vietnam referendum" . . "a referendum" . . . "referendum supervised by Nhu" . "referendum of South Vietnam" . . . "referendum about the future form of government" . "1955 State of Vietnam referendum" . . "State of Vietnam referendum of 1955" . "fraudulent referendum" . "fraud-ridden referendum" . "after having ousted B\u1EA3o \u0110\u1EA1i in 1955" . . "fraudulent 1955 referendum" . "1955 referendum" .