Perhaps you should try some spelling variations:
"de factoos" » "de factores", "de fatos", "side factors", "de faitoos", "e factoos", "de falcooos", "de factsos"
"e factor" » "e factors", "one factor", "age factor", "e factsr"
"de fact" » "de fait", "e fact", "de falco"
"de facto" » "de faito", "e facto", "de falcoo", "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: (("e factor") OR ((("de fact") OR ((("de facto") OR ("de factoos")))))).
• Removing quotes may allow a broader search: (( e factor ) or ((( de fact ) or ((( de facto ) or ( de factoos )))))).
• Adding a wildcard symbol may retrieve word variants: (("e factor") or ((("de fact") or ((("de facto") or ("de factoos"))))))*.