Perhaps you should try some spelling variations:
mode factsres » model factories, mode fracture, mode failures
de factor » dose factor, mode factor, de factores
e factor » e factors, one factor, age factor
facto » fact, facts
factor » factr, factsr

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