Perhaps you should try some spelling variations:
"specimens philologica slavicae" » "specimens philological slavicae", "specimina philologiae slavicae", "specimen histological slavicae", "specimens philologica slavica", "specimens philologiae slavicae", "specimens philologie slave"
"specimen philosophiae slavicae" » "specimen philologiae slavicae", "specimen philosophiae suae", "specimen philosophie islamic"
"specimina philologica slavicae" » "specimina philologiae slavicae", "specimens philological slavicae", "specimina philologica slavica", "specimina philologie slave"
"specimen philosophiae publice" » "specimen philosophy public"
"species philosophy slavicae" » "species philosophy classical", "species philosophy logical", "species philosophy islamic", "aspects philosophy slavicae", "sciences philosophy slavicae", "speaking philosophy slavicae"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("specimen philosophiae slavicae") OR ("specimen philosophiae publice"))) OR ((("species philosophy slavicae") OR ((("specimens philologica slavicae") OR ("specimina philologica slavicae")))))).
• Removing quotes may allow a broader search: (((( specimen philosophiae slavicae ) or ( specimen philosophiae publice ))) or ((( species philosophy slavicae ) or ((( specimens philologica slavicae ) or ( specimina philologica slavicae )))))).
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