Perhaps you should try some spelling variations:
"e factor" » "e factors", "one factor", "age factor", "ex factor", "e factr", "5 factor"
"e facto" » "ex facto", "e fact", "5 facto"
"de facto" » "dex facto", "de fact", "d5 facto"
"de fait" » "de faits", "le fait", "se fait"

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