Perhaps you should try some spelling variations:
"e factor" » "e factors", "one factor", "age factor", "e factr", "e factsr"
"e factsr" » "e factors", "e factory", "e fact"
"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: (((("e factor") OR ("e factsr"))) OR ((("de faits") OR ("de facto")))).
• Removing quotes may allow a broader search: (((( e factor ) or ( e factsr ))) or ((( de faits ) or ( de facto )))).
• Adding a wildcard symbol may retrieve word variants: (((("e factor") or ("e factsr"))) or ((("de faits") or ("de facto"))))*.