On Line Vietnam Movies How To Find Vietnam Documentaries On Line For Free?

How to find Vietnam Documentaries on line for free? - on line vietnam movies

For my English class, we need to do a search in Vietnam. I make documentaries. It was not until Monday 11 May (2 weeks), but documentaries are hard to find. There are in the library near my house, and it's time for me to ask, has sent to the libraries around me. No time to see, and write a research paper with sources of 7 (yes 7 movies)
I do not know 'money to buy seven films, does anyone know if these movies for free online?
(I have Netflix, and only 1 of the movies that are like snapshots)

The films are:
In this Year of the Pig
Hearts and Minds
Vietnam: A Retrospective
Vietnam: Long Time Coming
Viet Nam combat
In the heart of the Vietnam War
TheThe Vietnam War
The selection of games: I Remember Vietnam
National Geographic: The Invisible War in Vietnam: Pictures of the other
Side
Heart and Darkness: The Vietnam War Chronicles: 1945-1975

Any help would be great with each film