Perhaps you should try some spelling variations:
"de factor" » "de facto", "e factor", "dose factor", "de factoor", "de faconor"
"de falcor" » "die falcon", "de facon", "de falar", "de factor"
"de falco" » "de facto"
"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 fait"))) OR ((("de factor") OR ((((("de falcor") OR ("de falco"))) OR ("de factor")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"de fact\") or (\"de fait\"))) or (((\"de factor\") or (((((\"de falcor\") OR (\"de falco\"))) or (\"de factor\"))))))".
• Removing quotes may allow a broader search: (((( de fact ) or ( de fait ))) or ((( de factor ) or ((((( de falcor ) OR ( de falco ))) or ( de factor )))))).
• Adding a wildcard symbol may retrieve word variants: (((("de fact") or ("de fait"))) or ((("de factor") or ((((("de falcor") OR ("de falco"))) or ("de factor"))))))*.