Perhaps you should try some spelling variations:
"model factor" » "models factor", "model fast"
"mode factor" » "models factor", "model factors", "model factory", "mod_ factor", "moda factor", "mod3 factor"
"da facto" » "a factor", "5 facto", "ex facto"
"de facto" » "d_ facto", "da facto", "d3 facto"
"e fact" » "_ fact", "a fact", "3 fact"

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