Perhaps you should try some spelling variations:
"specimens philosophiae slavicae" » "species philosophy slavicae", "species philosophers slavicae", "specimens philological slavicae", "specimens philosophiae publice", "specimens philosophiae suae", "specimens philosophie islamic", "speciess philosophiae slavicae"
"specimen philosophiae slavicae" » "specimen philosophiae publice", "specimen philosophiae suae", "specimen philosophie islamic", "species philosophiae slavicae"
"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"

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 philosophiae slavicae") 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 philosophiae slavicae\") or (((\"specimens philosophiae slavicae\") or (((\"specimina philologica slavicae\") OR (\"specimina philologiae slavicae\"))))))".
• Removing quotes may allow a broader search: (( specimen philosophiae slavicae ) or ((( specimens philosophiae slavicae ) or ((( specimina philologica slavicae ) OR ( specimina philologiae slavicae )))))).
• Adding a wildcard symbol may retrieve word variants: (("specimen philosophiae slavicae") or ((("specimens philosophiae slavicae") or ((("specimina philologica slavicae") OR ("specimina philologiae slavicae"))))))*.