Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
scale student » late student, scale study, scale studies
a literatura » a literature, a literatur, de literatura
tests scale » tests stable, sets scale, tests safe
e filosofia » la filosofia
student e » student _, student a, student 1

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: tests scale student e filosofia ((a literatura) OR (((y literatura) OR (la literatura)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tests scale student e filosofia ((a literatura) or (((y literatura) OR (la literatura))))".
• Adding a wildcard symbol may retrieve word variants: tests scale student e filosofia ((a literatura) or (((y literatura) OR (la literatura))))*.