Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor", "dose factsr"
"de factr" » "de facteur", "de fazer", "de facon", "e factr", "de faconr", "one factr"
"de fact" » "e fact", "de facon", "one fact"
"de facto" » "e facto", "de facono", "one facto", "de facts"
"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 fact") OR ("de falco"))) OR ("de fait"))) OR ((("dose factor") OR ((((("de factr") OR ("de facto"))) OR ("dose factor")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"de fact\") or (\"de falco\"))) or (\"de fait\"))) or (((\"dose factor\") or (((((\"de factr\") OR (\"de facto\"))) or (\"dose factor\"))))))".
• Removing quotes may allow a broader search: (((((( de fact ) or ( de falco ))) or ( de fait ))) or ((( dose factor ) or ((((( de factr ) OR ( de facto ))) or ( dose factor )))))).
• Adding a wildcard symbol may retrieve word variants: (((((("de fact") or ("de falco"))) or ("de fait"))) or ((("dose factor") or ((((("de factr") OR ("de facto"))) or ("dose factor"))))))*.