Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "moore factor", "dose factr", "dose factsr"
"mode factor" » "model factor", "models factor", "model factors", "mode factr", "mode factsr"
"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 facto") OR ((("dose factor") OR ("mode factor")))).
• Removing quotes may allow a broader search: (( de facto ) or ((( dose factor ) or ( mode factor )))).
• Adding a wildcard symbol may retrieve word variants: (("de facto") or ((("dose factor") or ("mode factor"))))*.