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 fait" » "de faits", "se fait", "du fait"
"le fait" » "le faict"
"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 factor") OR ("de facto"))) OR ("dose factor"))) OR ((("de fait") OR ("le fait")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"de factor\") OR (\"de facto\"))) or (\"dose factor\"))) or (((\"de fait\") or (\"le fait\"))))".
• Removing quotes may allow a broader search: (((((( de factor ) OR ( de facto ))) or ( dose factor ))) or ((( de fait ) or ( le fait )))).
• Adding a wildcard symbol may retrieve word variants: (((((("de factor") OR ("de facto"))) or ("dose factor"))) or ((("de fait") or ("le fait"))))*.