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