Perhaps you should try some spelling variations:
"dose factor" » "noise factor", "one factor", "mode factor", "dos_ factor", "dosa factor", "dos5 factor", "dose factsr"
"da factor" » "a factor", "data factor", "rdna factor", "da factsr"
"3 fact" » "3 facts", "3 fast", "3 face"
"de facto" » "d_ facto", "da facto", "d5 facto", "de facts"
"e fact" » "_ fact", "a fact", "5 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: (((((("dose factor") OR ("da factor"))) OR ("de facto"))) OR ((("3 fact") OR ("e fact")))).
• Removing quotes may allow a broader search: (((((( dose factor ) or ( da factor ))) or ( de facto ))) or ((( 3 fact ) or ( e fact )))).
• Adding a wildcard symbol may retrieve word variants: (((((("dose factor") or ("da factor"))) or ("de facto"))) or ((("3 fact") or ("e fact"))))*.