Perhaps you should try some spelling variations:
life literature » polite literature, prose literature
filosofia life » filosofia le, filosofia de, filosofia e
duale studien » duale studium, scale studien, duales studium
de filosofia » e filosofia, di filosofia, la filosofia
test duale » test double, test delle, test orale
studien de » studien der, studien die, studien des