Roord drew a fantastic save from Kim Thanh just before halftime, but Van de Donk was on hand to tap in the rebound.
After Brugts' superb sixth with another fierce strike, Roord, who had hit the crossbar, headed in the seventh with seven minutes remaining.
"I was afraid that the gap would be even bigger," Vietnam coach Mai Duc Chung said.
"We have tried our best but it is clear that we cannot close the gap between us and the Netherlands.
Reporting by Hritika Sharma in Hyderabad, editing by Nick Mulvenney and Christian RadnedgeOur Standards: The Thomson Reuters Trust Principles.
Persons:
Danielle van de Donk, Jill Roord, Sherida Spitse, Molly Darlington, Esmee Brugts, Brugts, Vivianne Miedema, Lieke Martens, Katja Snoeijs, Dominique Janssen, Martens, Tran Thi Kim Thanh, Snoeijs, Van de Donk, Roord, Kim Thanh, Mai Duc Chung, Hritika Sharma, Nick Mulvenney
Organizations:
Soccer Football, FIFA, Forsyth Barr, Sherida Spitse REUTERS, Vietnam, Portugal, Sweden, Thomson
Locations:
New Zealand, Vietnam, Netherlands, Dunedin , New Zealand, Molly Darlington DUNEDIN , New Zealand, United States, Auckland, Sydney, Italy, Vietnam's, Roord, Janssen's, Hyderabad