Perhaps you should try some spelling variations:
"dose factor" » "one factor", "mode factor", "moore factor"
"de factor" » "de facto", "e factor", "mode factor", "de factoor", "de faitor"
"de faitor" » "de facto", "de fair", "de fait"
"les faits" » "des faits"
"de fact" » "de facto", "de fait", "e fact"

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