Perhaps you should try some spelling variations:
"mode factor" » "model factor", "models factor", "model factory"
"de factoor" » "de facto", "de facteur"
"de faito" » "de facto", "de fait", "de faits"
"de facts" » "de facto", "de faits", "cbe facts"

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 factoor") OR ("mode factor"))) OR ("de faito"))) OR ("de facts")).
• Removing quotes may allow a broader search: (((((( de factoor ) or ( mode factor ))) or ( de faito ))) or ( de facts )).
• Adding a wildcard symbol may retrieve word variants: (((((("de factoor") or ("mode factor"))) or ("de faito"))) or ("de facts"))*.