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