Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
filosofia la » filosofia da, filosofia le, filosofica da
burst scale » bast scale, best scale, just scale
studies der » studies ds, studies d, studies dn
studies de » studies die, studies doe, studies due

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 de) OR (studies der)) filosofia la literatura".
• Adding a wildcard symbol may retrieve word variants: burst scale ((studies de) OR (studies der)) filosofia la literatura*.