Perhaps you should try some spelling variations:
burning study » learning study, burning stars
da literatura » la literatura, a literatura, de literatura
mining study » finding study, binding study, milling study
filosofia da » filosofia de, filosofia del, filosofia e
1 filosofia » e filosofia, a filosofia, y 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: "tests ((burning study) OR (mining study)) 1 filosofia da literatura".
• Adding a wildcard symbol may retrieve word variants: tests ((burning study) OR (mining study)) 1 filosofia da literatura*.