Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor"
"de falco" » "de facto"
"de factr" » "de facto", "de facteur", "de fazer", "de factor", "e factr", "de faconr"
"de fact" » "de facto", "e fact", "de facon"
"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: (((((("de fact") OR ("de falco"))) OR ("de fait"))) OR ((("dose factor") OR ((("de factr") OR ("dose factor")))))).
• Removing quotes may allow a broader search: (((((( de fact ) or ( de falco ))) or ( de fait ))) or ((( dose factor ) or ((( de factr ) or ( dose factor )))))).
• Adding a wildcard symbol may retrieve word variants: (((((("de fact") or ("de falco"))) or ("de fait"))) or ((("dose factor") or ((("de factr") or ("dose factor"))))))*.