Perhaps you should try some spelling variations:
"de factoor" » "de facteur", "de faitoor", "e factoor", "de falcooor", "de factsor"
"de falcoo" » "de falco", "die falcon", "de facon"
"de factor" » "e factor", "dose factor", "mode factor", "de faitor", "de falcoor", "de factsr"
"de facto" » "de faito", "e facto", "de falcoo", "de facts"
"de fact" » "de fait", "e fact", "de falco"

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