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