Perhaps you should try some spelling variations:
"documentary videos" » "documentary video", "documentary ideas", "documentary victor"
"documentary files" » "documentary films", "document files", "documentary video"
"documentary film" » "documentary films", "documentary _"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("documentary files") OR ("documentary film"))) OR ("documentary videos")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"documentary files\") OR (\"documentary film\"))) or (\"documentary videos\"))".
• Removing quotes may allow a broader search: (((( documentary files ) OR ( documentary film ))) or ( documentary videos )).
• Adding a wildcard symbol may retrieve word variants: (((("documentary files") OR ("documentary film"))) or ("documentary videos"))*.