Perhaps you should try some spelling variations:
"de factores" » "de actores", "que factores", "de sectores", "de factoores", "de faitores", "e factores"
"mode factor" » "model factor", "models factor", "model factory", "mode factoor", "mode faitor", "moe factor"
"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: (("de fact") OR ((("de factores") OR ("mode factor")))).
• Removing quotes may allow a broader search: (( de fact ) or ((( de factores ) or ( mode factor )))).
• Adding a wildcard symbol may retrieve word variants: (("de fact") or ((("de factores") or ("mode factor"))))*.