Perhaps you should try some spelling variations:
del literatura » de literatura, pela literatura, da literatura
da filosofia » la filosofia, di filosofia, a filosofia
burst scale » bast scale, just scale, rust scale
best scale » bast scale, rest scale, best sales
studies da » studies dna, studies das, studies dan

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: "((best scale) OR (burst scale)) studies da filosofia del literatura".
• Adding a wildcard symbol may retrieve word variants: ((best scale) OR (burst scale)) studies da filosofia del literatura*.