Perhaps you should try some spelling variations:
"six factor" » "six factors", "sex factors", "x factor", "sx factor", "ssix factors", "stax factor"
"sex factor" » "sex factors", "six factors", "x factor"
"dex facto" » "ex facto", "dux factor", "index factor"
"ix factor" » "x factor", "six factors", "tax factor"
"e factor" » "e factors", "one factor", "age factor"
"de facto" » "de faito", "e facto", "de falcoo"
"de fact" » "de fait", "e fact", "de falco"

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: (((((("de facto") OR ("dex facto"))) OR ((("e factor") OR ((("ix factor") OR ((("sex factor") OR ("six factor"))))))))) OR ("de fact")).
• Removing quotes may allow a broader search: (((((( de facto ) or ( dex facto ))) or ((( e factor ) or ((( ix factor ) or ((( sex factor ) or ( six factor ))))))))) or ( de fact )).
• Adding a wildcard symbol may retrieve word variants: (((((("de facto") or ("dex facto"))) or ((("e factor") or ((("ix factor") or ((("sex factor") or ("six factor"))))))))) or ("de fact"))*.