Perhaps you should try some spelling variations:
"mode factor" » "model factor", "models factor", "model factory", "mod_ factor", "moda factor", "mod3 factor"
"d_ facto" » "_ facts", "_ fact", "_ 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 ((((("de facto") OR ("d_ facto"))) OR ("da facto"))))) OR ("e fact")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mode factor\") or (((((\"de facto\") OR (\"d_ facto\"))) or (\"da facto\"))))) or (\"e fact\"))".
• Removing quotes may allow a broader search: (((( mode factor ) or ((((( de facto ) OR ( d_ facto ))) or ( da facto ))))) or ( e fact )).
• Adding a wildcard symbol may retrieve word variants: (((("mode factor") or ((((("de facto") OR ("d_ facto"))) or ("da facto"))))) or ("e fact"))*.