Perhaps you should try some spelling variations:
di literatura » de literatura, da literatura, ii literatura
filosofia di » filosofia de, filosofia da, filosofia del
burst scale » bast scale, best scale, just scale
studies die » studie die, studies does, studies dose
studien die » studie die, studien der

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: "burst scale ((studies die) OR (studien die)) filosofia di literatura".
• Adding a wildcard symbol may retrieve word variants: burst scale ((studies die) OR (studien die)) filosofia di literatura*.