Perhaps you should try some spelling variations:
"mode factor" » "model factor", "models factor", "model factors", "mode factr", "mode factsr"
"dose factsr" » "dose factor"
"de fait" » "de faits", "le fait", "se fait"
"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 fait"))) OR ((("mode factor") OR ("dose factsr")))).
• Removing quotes may allow a broader search: (((( de facto ) or ( de fait ))) or ((( mode factor ) or ( dose factsr )))).
• Adding a wildcard symbol may retrieve word variants: (((("de facto") or ("de fait"))) or ((("mode factor") or ("dose factsr"))))*.