Perhaps you should try some spelling variations:
stable studied » state studied, table studies, unstable studies
tests stable » tests table, sets stable, test table
filosofica e » filosofica da, filosofia de, filosofia _
filosofia e » filosofia de, filosofia del
studied 3 » studied _, studied 5, studied 3.3

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 stable studied 3 ((filosofica e) OR (filosofia e)) literatura".
• Adding a wildcard symbol may retrieve word variants: tests stable studied 3 ((filosofica e) OR (filosofia e)) literatura*.