Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor"
"de factor" » "de facto", "e factor", "mode factor", "de factoor", "de falcoor"
"de faits" » "des faits", "les faits", "de traits", "le faits", "se faits", "du faits"
"de fait" » "le fait", "se fait", "du fait"
"de fact" » "de facto", "e fact", "de falco"

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