Perhaps you should try some spelling variations:
pela literatura » pena literatura, la literatura, a literatura
filosofia pela » filosofia della, filosofia del, filosofia para
duale studien » duale studium, scale studien, duales studium
es filosofia » e filosofia, em filosofia, la filosofia
burst duale » burst scale, bursts dual
studien es » studien aus, studien bei, studien ein