The bombs were found on the slopes of a mountain and were detonated in controlled explosions after the area had been evacuated.
Officials said more than 1,000 unexploded cluster bombs remain on the 30-hectare mountainside.
Clustered bombs left from the Vietnam War in Quang Ngai Province
The area is officially off-limits to the public, but many people make a living from mining and farming on the mountain, regardless of the dangers.
Explosions have occurred in the area, officials said, but without specifying casualties.
They said that clearance efforts will continue.
Bombs left over from the war are a constant threat in central Vietnam.
Unexploded ordnance still covers a fifth of the country and explosions occur frequently, killing more than 1,500 people every year and maiming and injuring 2,200 more, according to official data.
