Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor"
"de facon" » "de facto", "la facon"
"en facon" » "en face", "la facon", "en favor"
"de falco" » "de facto"
"de faits" » "des faits", "de fait", "les faits"
"de factr" » "de facto", "de facteur", "de fair", "de factor", "de fact", "de factors"
"de fazer" » "de fer"
"e factr" » "e factor", "e fact", "e factors"

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 facon") OR ("en facon"))) OR ("de falco"))) OR ("de faits"))) OR ((("dose factor") OR ((((((("de factr") OR ("de fazer"))) OR ("e factr"))) OR ("dose factor")))))).
• Removing quotes may allow a broader search: (((((((( de facon ) or ( en facon ))) or ( de falco ))) or ( de faits ))) or ((( dose factor ) or ((((((( de factr ) or ( de fazer ))) or ( e factr ))) or ( dose factor )))))).
• Adding a wildcard symbol may retrieve word variants: (((((((("de facon") or ("en facon"))) or ("de falco"))) or ("de faits"))) or ((("dose factor") or ((((((("de factr") or ("de fazer"))) or ("e factr"))) or ("dose factor"))))))*.