Perhaps you should try some spelling variations:
"mode factor" » "model factor", "models factor", "model factory", "mode factors", "modone factor", "modage factor", "mode faitor", "moe factor", "mode falcoor", "mode factsr"
"e factor" » "e factors", "one factor", "age factor", "e factsr"
"de facto" » "de faito", "e facto", "de falcoo", "de facts"
"de fact" » "de fait", "e fact", "de falco"

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