Perhaps you should try some spelling variations:
"mode factor" » "model factor", "models factor", "model factors", "mode faitor", "moe factor", "mode falcoor", "mode factsr"
"de factoor" » "de facteur", "de faitoor", "e factoor", "de falcooor", "de factsor"
"de falcoo" » "de falco", "die falcon", "de facon"
"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: (((((("de falcoo") OR ("de facto"))) OR ("de fact"))) OR ((("mode factor") OR ((("de factoor") OR ("de faitoor")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"de falcoo\") or (\"de facto\"))) or (\"de fact\"))) or (((\"mode factor\") or (((\"de factoor\") OR (\"de faitoor\"))))))".
• Removing quotes may allow a broader search: (((((( de falcoo ) or ( de facto ))) or ( de fact ))) or ((( mode factor ) or ((( de factoor ) OR ( de faitoor )))))).
• Adding a wildcard symbol may retrieve word variants: (((((("de falcoo") or ("de facto"))) or ("de fact"))) or ((("mode factor") or ((("de factoor") OR ("de faitoor"))))))*.