Perhaps you should try some spelling variations:
"specimens philosophiae slavicae" » "species philosophy slavicae", "specimens philological slavicae", "specimina philologiae slavicae", "specimens philologiae slavicae", "specimens philosophiae publice", "specimens philosophiae suae"
"specimen philosophiae slavicae" » "specimen philologiae slavicae", "specimen philosophiae publice", "specimen philosophiae suae"
"species philosophers slavicae" » "species philosophers france", "species philosophers have", "species philosophers american", "species philosophy slavicae", "sciences philosophers slavicae", "grecian philosophers slavicae"
"specimens philologica slavicae" » "specimens philological slavicae", "specimina philologica slavicae", "specimina philologiae slavicae", "specimens philologica slavica", "specimens philologiae slavicae", "specimens philologie slave"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"specimen philosophiae slavicae\") OR (((((\"specimens philosophiae slavicae\") OR (\"species philosophers slavicae\"))) OR (\"specimens philologica slavicae\"))))".
• Removing quotes may allow a broader search: (( specimen philosophiae slavicae ) OR ((((( specimens philosophiae slavicae ) OR ( species philosophers slavicae ))) OR ( specimens philologica slavicae )))).
• Adding a wildcard symbol may retrieve word variants: (("specimen philosophiae slavicae") OR ((((("specimens philosophiae slavicae") OR ("species philosophers slavicae"))) OR ("specimens philologica slavicae"))))*.