Perhaps you should try some spelling variations:
die studenten » der studenten, den studenten, fur studenten
filosofica da » filosofia da, filosofia de, filosofia di
da literatura » la literatura, a literatura, de literatura
3 filosofica » e filosofica, e filosofia, a filosofia
studenten 3 » studenten _, studenten 5, studenten 4
west die » test die, west d.d