Perhaps you should try some spelling variations:
ii literatura » ii literatur, ii literature, iii literature
tests stable » tests table, sets stable, test table
filosofia ii » filosofia di, filosofica di, filosofia de
tests scale » sets scale, tests safe, tests shall
study la » study law, study lay, study lca

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) OR (tests stable)) study la filosofia ii literatura*".