Perhaps you should try some spelling variations:
"teubner studierenden mathematik" » "teubner studierenden mathematische", "teubner studierende mathematischer", "unter studierenden mathematik", "meine studierenden mathematik", "meinen studierenden mathematik"
"eines studierenden mathematik" » "eines studierenden mathematische", "eines studierende mathematischer", "die studierenden mathematik", "von studierenden mathematik", "der studierenden mathematik"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"teubner studierenden mathematik\") OR (\"eines studierenden mathematik\"))".
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