Perhaps you should try some spelling variations:
"dsex factor" » "sex factor", "sex factors", "six factor", "dssex factorr", "dsix factorr", "dsde factor"
"15 factor" » "15 factors", "12 factor", "5 factor"
"ex facto" » "sex factor", "ix factor", "de facto"
"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: (((((("15 factor") OR ("dsex factor"))) OR ((("e facto") OR ("ex facto"))))) OR ("de fact")).
• Removing quotes may allow a broader search: (((((( 15 factor ) or ( dsex factor ))) or ((( e facto ) or ( ex facto ))))) or ( de fact )).
• Adding a wildcard symbol may retrieve word variants: (((((("15 factor") or ("dsex factor"))) or ((("e facto") or ("ex facto"))))) or ("de fact"))*.