Perhaps you should try some spelling variations:
"specimina philologica slavic" » "specimens philological slavic", "specimina philologica slavica", "specimina philologica slavicae", "specimina philologiae slavicae"
"specimina philologica slavicaea" » "specimens philological slavicaea", "specimina philologica slavicae", "specimina philologica slavica", "specimina philologiae slavicae", "specimina philologica slavicaaea", "specimina philologica slavicaeaea", "specimina philologiae slavicaeaea"
"specimina philologiae slavicaea" » "specimens philological slavicaea", "specimen philosophiae slavicaea", "specimina philologiae slavicae", "specimina philologica slavicae", "specimina philologica slavica"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("specimina philologica slavic") OR ((("specimina philologiae slavicaea") OR ("specimina philologica slavicaea")))).
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