Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "moore factor", "dose factr"
"mode factor" » "model factor", "models factor", "model factory", "moe factor", "mode factores", "mode factorij", "mode factr"
"de factor" » "e factor", "de factores", "de factorij", "de factr"
"de facts" » "de faits", "cbe facts", "de fautes"
"de factr" » "de facteur", "de fazer", "de facon"
"de facto" » "de fact"

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 facto") OR ("de facts"))) OR ((((((("de factor") OR ("dose factor"))) OR ("mode factor"))) OR ("de factr")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"de facto\") or (\"de facts\"))) or (((((((\"de factor\") OR (\"dose factor\"))) or (\"mode factor\"))) or (\"de factr\"))))".
• Removing quotes may allow a broader search: (((( de facto ) or ( de facts ))) or ((((((( de factor ) OR ( dose factor ))) or ( mode factor ))) or ( de factr )))).
• Adding a wildcard symbol may retrieve word variants: (((("de facto") or ("de facts"))) or ((((((("de factor") OR ("dose factor"))) or ("mode factor"))) or ("de factr"))))*.