Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor"
"de facts" » "de faits", "cbe facts", "de fautes", "e facts", "de falcos"
"de fact" » "de fait", "e fact", "de falco"
"de facto" » "de faito", "e facto", "de falcoo"

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 facts"))) OR ((("de facto") OR ("dose factor")))).
• Removing quotes may allow a broader search: (((( de fact ) or ( de facts ))) or ((( de facto ) or ( dose factor )))).
• Adding a wildcard symbol may retrieve word variants: (((("de fact") or ("de facts"))) or ((("de facto") or ("dose factor"))))*.