Perhaps you should try some spelling variations:
"ex facto" » "sex factor", "ix factor", "de facto"
"e facto" » "de facto", "e factor", "e factors", "_ facto", "a facto", "3 facto"
"5 facto" » "5 factor", "5 facts", "5 fact"
"e fact" » "_ fact", "a fact", "3 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 facto") OR ("5 facto"))) OR ("ex facto"))) OR ("e fact")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"e facto\") OR (\"5 facto\"))) or (\"ex facto\"))) or (\"e fact\"))".
• Removing quotes may allow a broader search: (((((( e facto ) OR ( 5 facto ))) or ( ex facto ))) or ( e fact )).
• Adding a wildcard symbol may retrieve word variants: (((((("e facto") OR ("5 facto"))) or ("ex facto"))) or ("e fact"))*.