Perhaps you should try some spelling variations:
"specimens philosophiae slavicae" » "species philosophy slavicae", "species philosophers slavicae", "specimens philological slavicae", "specimens philosophiae suae"
"specimina philologica slavicae" » "specimens philological slavicae", "specimina philologica slavica", "specimina philologie slave", "specimina philologica sive"
"specimina philologiae slavicae" » "specimens philological slavicae", "specimina philologica slavica", "specimina philologie slave"
"specimen philosophie islamic" » "medien philosophie islamic", "species philosophy islamic", "rechten philosophie islamic", "specimen philosophy islamic", "specimen philosophie analytic"
"specimen philosophiae publice" » "specimen philosophy public"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("specimen philosophie islamic") OR ("specimen philosophiae publice"))) OR ((("specimens philosophiae slavicae") OR ((("specimina philologica slavicae") OR ("specimina philologiae slavicae"))))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"specimen philosophie islamic\") or (\"specimen philosophiae publice\"))) or (((\"specimens philosophiae slavicae\") or (((\"specimina philologica slavicae\") OR (\"specimina philologiae slavicae\"))))))*".
• Removing quotes may allow a broader search: (((( specimen philosophie islamic ) or ( specimen philosophiae publice ))) or ((( specimens philosophiae slavicae ) or ((( specimina philologica slavicae ) OR ( specimina philologiae slavicae ))))))*.