Perhaps you should try some spelling variations:
"sex factor" » "sex factors", "six factor", "six factors", "six factorr", "sde factor", "sx factorr"
"ex facto" » "ix factor", "de facto", "x factor"
"5 facto" » "5 factor", "5 facts", "5 fact"
"e facto" » "de facto", "e factor", "e fact"
"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: (((((("5 facto") OR ("sex factor"))) OR ((("e facto") OR ("ex facto"))))) OR ("de fact")).
• Removing quotes may allow a broader search: (((((( 5 facto ) or ( sex factor ))) or ((( e facto ) or ( ex facto ))))) or ( de fact )).
• Adding a wildcard symbol may retrieve word variants: (((((("5 facto") or ("sex factor"))) or ((("e facto") or ("ex facto"))))) or ("de fact"))*.