The parliament held secret ballots on the work as part of the ongoing 8th session in Hanoi.
Up to 94 percent of the legislators present at the meeting voted for the case of Dinh while 87 percent backed the case of Tien.
The NA also approved two resolutions on the cases of Dinh and Tien which respectively received the support of 100 percent and 81.78 percent of the deputies.
Earlier, the Politburo had appointed Dinh as Secretary of the Khanh Hoa provincial Party Committee for the 2015 – 2020 tenure.
Meanwhile, Tien had been assigned as head of the central board of healthcare services for senior officials.