Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor", "dose factr", "dose factsr"
"mode factr" » "mode factor", "model factor", "modes factor"
"de factor" » "e factor", "mode factor", "de factores", "de factr", "de factsr"
"de faitor" » "de fair", "de faits", "de fato", "de faitsor", "le faitor", "se faitor"
"de fait" » "de faits", "le fait", "se fait"
"de facto" » "de fact", "de facts"

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: (((((((((("de factor") OR ("dose factor"))) OR ("de faitor"))) OR ((("mode factr") OR ("mode factr"))))) OR ("de facto"))) OR ("de fait")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((((\"de factor\") OR (\"dose factor\"))) or (\"de faitor\"))) or (((\"mode factr\") or (\"mode factr\"))))) or (\"de facto\"))) or (\"de fait\"))".
• Removing quotes may allow a broader search: (((((((((( de factor ) OR ( dose factor ))) or ( de faitor ))) or ((( mode factr ) or ( mode factr ))))) or ( de facto ))) or ( de fait )).
• Adding a wildcard symbol may retrieve word variants: (((((((((("de factor") OR ("dose factor"))) or ("de faitor"))) or ((("mode factr") or ("mode factr"))))) or ("de facto"))) or ("de fait"))*.