Perhaps you should try some spelling variations:
"de facteur" » "de facteurs", "le facteur", "du facteur", "de faiteur", "e facteur", "de falcoeur"
"de facto" » "de faito", "e facto", "de falcoo", "de factor", "de facts"
"de fact" » "de fait", "e fact", "de falco"
"de factoor" » "de faitoor", "e factoor", "de falcooor", "de factoror", "de factsor"

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