Perhaps you should try some spelling variations:
"de factor" » "de facto", "e factor", "dose factor", "de factoor", "de falcoor", "de faconor", "d_ factor", "da factor", "d3 factor"
"de factr" » "de facto", "de facteur", "de fazer", "de factor", "de falcor", "de faconr", "d_ factr", "da factr", "d3 factr"
"de fact" » "de facto", "de falco", "de facon", "d_ fact", "da fact", "d3 fact"
"de fait" » "de faits", "le fait", "se fait"
"e fact" » "_ fact", "a fact", "3 fact"

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 ("e fact"))) OR ("de fait"))) OR ((("de factor") OR ("de factr")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"de fact\") OR (\"e fact\"))) or (\"de fait\"))) or (((\"de factor\") or (\"de factr\"))))".
• Removing quotes may allow a broader search: (((((( de fact ) OR ( e fact ))) or ( de fait ))) or ((( de factor ) or ( de factr )))).
• Adding a wildcard symbol may retrieve word variants: (((((("de fact") OR ("e fact"))) or ("de fait"))) or ((("de factor") or ("de factr"))))*.