Perhaps you should try some spelling variations:
"de factor" » "dose factor", "mode factor", "de factores", "de factors", "done factor", "dage factor", "de factr", "de factsr"
"e factor" » "e factors", "one factor", "age factor", "e factr", "e factsr"
"de factr" » "de facteur", "de fazer", "de facon"
"de fait" » "de faits", "le fait", "se fait"
"de facto" » "de fact", "de facts"

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