Perhaps you should try some spelling variations:
six factors » sex factors, x factors
six factor » sex factor, sex factors, x factor
ix factor » x factor, sex factor, tax factor
dex facto » sex factor, dux factor, index factor
ex facto » sex factor, x factor, 5 facto
e facto » e factor, e fact, 5 facto
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 facto ) OR ((( ex facto ) OR ((( ix factor ) OR ( ((six factor) OR (six factors)) ))))))))) OR ( de fact )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((( de facto ) or ( dex facto ))) or ((( e facto ) or ((( ex facto ) or ((( ix factor ) or ( ((six factor) OR (six factors)) ))))))))) or ( de fact ))".
• Adding a wildcard symbol may retrieve word variants: (((((( de facto ) or ( dex facto ))) or ((( e facto ) or ((( ex facto ) or ((( ix factor ) or ( ((six factor) OR (six factors)) ))))))))) or ( de fact ))*.