Perhaps you should try some spelling variations:
"de factos" » "de facto", "de fatos", "de factores", "de factoos", "de faitos", "e factos"
"e factor" » "e factors", "one factor", "age factor"
"de facts" » "de facto", "de faits", "cbe facts", "de factos", "e facts"
"de fact" » "de facto", "de fait", "e 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: (("e factor") OR ((("de fact") OR ((("de facts") OR ("de factos")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"e factor\") or (((\"de fact\") or (((\"de facts\") OR (\"de factos\"))))))".
• Removing quotes may allow a broader search: (( e factor ) or ((( de fact ) or ((( de facts ) OR ( de factos )))))).
• Adding a wildcard symbol may retrieve word variants: (("e factor") or ((("de fact") or ((("de facts") OR ("de factos"))))))*.