Perhaps you should try some spelling variations:
stable studien » stadler studien, scale studien, unstable studies
table studies » cable studies, bible studies, eagle studies
ii literatura » ii literatur, ii literature, iii literature
filosofia ii » filosofia di, filosofica di, filosofia de
e filosofia » la 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 ((stable studien) OR (table studies)) e filosofia ii literatura*".