Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor", "dose factr", "dose factsr"
"de factor" » "e factor", "mode factor", "de factores", "de factr", "de factsr"
"de faits" » "des faits", "de fait", "les faits"
"de facto" » "de fact", "de 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 facto") OR ("de faits"))) OR ((("de factor") OR ("dose factor")))).
• Removing quotes may allow a broader search: (((( de facto ) or ( de faits ))) or ((( de factor ) or ( dose factor )))).
• Adding a wildcard symbol may retrieve word variants: (((("de facto") or ("de faits"))) or ((("de factor") or ("dose factor"))))*.