I can get 'Twentieth century fox' out of some of the letters, still leaving quite a few.
Twentieth century Fox is a familiar introduction to its films. I hope this might help.
Many apologies if it dosen't.
Sorry it doesn't give the number of words , it is the name of a film using all letters .Thanks for trying it certainly has me stumped It was made in 1933.
There was a 1933 film called "Once upon a Time", which is a familiar introduction but your list of letters do not include an M and it would still leave a lot of unused letters.