Perhaps you should try some spelling variations:
"e factor" » "e factors", "one factor", "age factor"
"de faits" » "des faits", "les faits", "de traits", "le faits", "se faits", "du faits"
"de facts" » "de facto", "cbe facts", "de fautes"
"de fait" » "le fait", "se fait", "du fait"

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