Perhaps you should try some spelling variations:
"mode factor" » "model factor", "models factor", "model factory", "mode factr", "mode factsr"
"de facteur" » "de facteurs", "le facteur", "du facteur"
"de factsr" » "de faits"
"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 ((((("de factsr") OR ("de facteur"))) OR ("mode factor")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"de facto\") or (((((\"de factsr\") OR (\"de facteur\"))) or (\"mode factor\"))))".
• Removing quotes may allow a broader search: (( de facto ) or ((((( de factsr ) OR ( de facteur ))) or ( mode factor )))).
• Adding a wildcard symbol may retrieve word variants: (("de facto") or ((((("de factsr") OR ("de facteur"))) or ("mode factor"))))*.