Perhaps you should try some spelling variations:
"mode factor" » "model factor", "models factor", "model factory", "mode factorr", "modex factor", "mode factr"
"dose factor" » "noise factor", "one factor", "moore factor", "dose factorr", "dosex factor", "dose factr"
"de facon" » "de falco", "la facon", "en facon"
"de facto" » "de factor", "dex facto", "de fact"
"e facto" » "e factor", "ex facto", "e fact"
"de fait" » "de faits", "le fait", "se fait"

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: (((((("mode factor") OR ("dose factor"))) OR ((("de facto") OR ("e facto"))))) OR ((("de facon") OR ("de fait")))).
• Removing quotes may allow a broader search: (((((( mode factor ) or ( dose factor ))) or ((( de facto ) or ( e facto ))))) or ((( de facon ) or ( de fait )))).
• Adding a wildcard symbol may retrieve word variants: (((((("mode factor") or ("dose factor"))) or ((("de facto") or ("e facto"))))) or ((("de facon") or ("de fait"))))*.