Perhaps you should try some spelling variations:
"specimens philosophiae slavicae" » "species philosophy slavicae", "species philosophers slavicae", "specimens philological slavicae", "specimens philosophiae publice", "specimens philologica slavicae", "specimens philosophiae suae", "speciess philosophiae slavicae"
"specimen philosophiae slavicae" » "specimen philosophiae publice", "specimen philologica slavicae", "specimen philosophiae suae", "species philosophiae slavicae"
"speciess philosophiae slavicae" » "speciess philosophiae publice", "speciess philologica slavicae", "speciess philosophiae suae", "species philosophy slavicae", "species philosophers slavicae", "spencers philosophie slavicae"
"specimens philologiae slavicae" » "specimens philological slavicae", "specimina philologiae slavicae", "specimina philologica slavicae", "specimens philologica slavicae", "specimens philologica slavica", "specimens philologie slave", "speciess philologiae slavicae"

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