Perhaps you should try some spelling variations:
mode factor » model factor, models factor, model factory
dose factor » noise factor, one factor, moore factor
de factor » de facto, e factor, de factores
de fait » de faits, le fait, se fait

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 factor ) OR ( mode factor ))) OR ( dose factor ))) OR ( de fait )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((( de factor ) OR ( mode factor ))) or ( dose factor ))) or ( de fait ))".
• Adding a wildcard symbol may retrieve word variants: (((((( de factor ) OR ( mode factor ))) or ( dose factor ))) or ( de fait ))*.