Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor", "dose factsr"
"de factsr" » "de facteur", "de faits"
"3 fact" » "3 facts", "3 fast", "3 face"
"de facto" » "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 factsr") OR ((("de facto") OR ("dose factor"))))) OR ("3 fact")).
• Removing quotes may allow a broader search: (((( de factsr ) or ((( de facto ) or ( dose factor ))))) or ( 3 fact )).
• Adding a wildcard symbol may retrieve word variants: (((("de factsr") or ((("de facto") or ("dose factor"))))) or ("3 fact"))*.