Perhaps you should try some spelling variations:
di literatura » de literatura, ii literatura, di letteratura
da literatura » la literatura, a literatura, de literatura
scales study » scale study, cases study, scales sted
sets scales » sets scale, sets scaled, sets locales
e filosofia » la filosofia

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "sets scales study e filosofia ((di literatura) OR (da literatura))".
• Adding a wildcard symbol may retrieve word variants: sets scales study e filosofia ((di literatura) OR (da literatura))*.