Perhaps you should try some spelling variations:
filosofiche lo » filosofiche e
lo literatura » la literatura, lo literatur, y literatura
tests scale » tests stable, sets scale, tests safe
study vpn » study van, study v, study vi
study vp » study v, study vi, study vs

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 scale ((study vp) OR (study vpn)) filosofiche lo literatura".
• Adding a wildcard symbol may retrieve word variants: tests scale ((study vp) OR (study vpn)) filosofiche lo literatura*.