Perhaps you should try some spelling variations:
idealen studium » dualen studium, duales studium, duale studium
la literatura » la litterature, a literature
a filosofica » a filosofia, la filosofia, e filosofia
e filosofica » e filosofia, e filosofiche, a filosofia
des idealen » das ideale

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: "des idealen studium ((a filosofica) OR (e filosofica)) la literatura*".