Perhaps you should try some spelling variations:
"de factor" » "e factor", "dose factor", "mode factor", "de factorr", "dex factor", "de factr", "de faitor", "de falcoor"
"de facto" » "de factor", "dex facto", "de fact", "de faito", "e facto", "de falcoo"
"e facto" » "e factor", "ex facto", "e fact"
"de fact" » "de fait", "e fact", "de falco"

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