"documentary movie" is correct and usable in written English.
For example, "I recently watched an interesting documentary movie about the history of Central America."
Is it a documentary movie?
Treatments comprise a documentary movie on debt, an internet exercise and a budgeting smartphone app.
The documentary movie did not affect attitudes towards saving or private credits.
Yassamin, a documentary movie maker, turned away.
QUESTION FROM ANDREW: What's a good documentary movie, in your opinion, that came out in 2010?
Incredible documentary movie on dietary causes of health and illness came out a couple years ago.
The filmmaker, Jennifer Nelson, was producing a documentary movie, tentatively titled "Happy Birthday," about the song, the lawsuit said.
Our first date, to a documentary movie and coffee, was calm, thoughtful and, dare I say, fun.
Besides "GRRR!," the Stones will also release in mid-November "Crossfire Hurricane," a documentary movie about their early years.
"The grammar of a documentary movie [Muldoon is a former BBC Northern Ireland radio and TV producer] is very sophisticated.
