Perhaps you should try some spelling variations:
"de factor" » "de facto", "e factor", "dose factor", "de factoor", "de faitor"
"de fact" » "de facto", "de fait", "e fact"
"de factooor" » "de factoooor", "de faitooor", "e factooor", "de factorfor", "de factbook", "de factior"

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 factor") OR ("de factooor")))).
• Removing quotes may allow a broader search: (( de fact ) or ((( de factor ) or ( de factooor )))).
• Adding a wildcard symbol may retrieve word variants: (("de fact") or ((("de factor") or ("de factooor"))))*.