Perhaps you should try some spelling variations:
"de facteur" » "de facteurs", "le facteur", "du facteur", "de factoeur", "de faiteur", "e facteur"
"de factr" » "de facto", "de fazer", "de fair", "de factor", "de faitr", "e factr", "de fact", "de factors"
"de facon" » "de facto", "de falco", "la facon"
"de fact" » "de facto", "de fait", "e fact"
"e factr" » "e factor", "e fact", "e factors"

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