Perhaps you should try some spelling variations:
stable studien » stadler studien, scale studien, table studies
lap filosofia » a filosofia, da filosofia, na filosofia
e literatura » de literatura, y literatura, e literatur
tilt stable » tilt table, salt stable, belt stable

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: "tilt stable studien ((lap filosofia) OR (la filosofia)) e literatura*".