Perhaps you should try some spelling variations:
lay filosofia » la filosofia, a filosofia, y filosofia
le literatura » la literatura, e literatura, de litteratura
de literatura » de litterature, la literatura, y literatura
safe steady » state steady, case steady, safe speedy
safe study » safety study, safe studio, life study

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tests ((safe study) OR (safe steady)) lay filosofia ((le literatura) OR (de literatura))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tests ((safe study) OR (safe steady)) lay filosofia ((le literatura) or (de literatura))*".