Vietcombank sold the greenback at VND26,385, a 0.05% gain from Tuesday. The currency climbed 0.26% to around VND27,922 on the black market.
Globally, the dollar edged higher against its rivals on Wednesday and was set to snap a five session losing streak as the U.S. Congress looked set to end the federal shutdown, Reuters reported.
The U.S. dollar index, which measures the greenback's strength against a basket of six currencies, was last 0.1% higher at 99.574, trading slightly higher after reaching the lowest levels this month earlier in the session.
The greenback strengthened 0.2% against the yen to 154.48. The euro slipped 0.1% to $1.1575.
It had stood at a one-week low against major peers earlier on Wednesday after private-sector U.S. jobs data stoked worries about the health of the labor market.
"I think the broad set of data suggests that the labour market is cooling, but only gradually so, and I think we should see some confirmation of that from the return of official data likely by next week, with the reopening of the U.S. government," said Sim Moh Siong, a currency strategist at Bank of Singapore.