Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor", "dos_ factor", "dosa factor", "dos3 factor"
"de falco" » "de facto"
"de factr" » "de facto", "de facteur", "de fazer", "de factor", "de faconr", "one factr", "d_ factr", "da factr", "d3 factr"
"de fact" » "de facto", "de facon", "one fact", "d_ fact", "da fact", "d3 fact"
"de fait" » "de faits", "le fait", "se fait"
"e fact" » "_ fact", "a fact", "3 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 fact") OR ("e fact"))) OR ("de falco"))) OR ("de fait"))) OR ((("dose factor") OR ((("de factr") OR ("dose factor")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"de fact\") OR (\"e fact\"))) or (\"de falco\"))) or (\"de fait\"))) or (((\"dose factor\") or (((\"de factr\") or (\"dose factor\"))))))".
• Removing quotes may allow a broader search: (((((((( de fact ) OR ( e fact ))) or ( de falco ))) or ( de fait ))) or ((( dose factor ) or ((( de factr ) or ( dose factor )))))).
• Adding a wildcard symbol may retrieve word variants: (((((((("de fact") OR ("e fact"))) or ("de falco"))) or ("de fait"))) or ((("dose factor") or ((("de factr") or ("dose factor"))))))*.