Perhaps you should try some spelling variations:
"mode factor" » "model factor", "models factor", "model factors", "mod_ factor", "mod3 factor", "mod5 factor"
"da facto" » "a factor", "5 facto", "ex facto", "da faceo", "da factoro"
"de facto" » "d_ facto", "d3 facto", "d5 facto"
"e fact" » "_ fact", "3 fact", "5 fact"
"a fact" » "a face", "a factor"

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