Perhaps you should try some spelling variations:
"specimens philosophiae slavicae" » "species philosophy slavicae", "species philosophers slavicae", "specimina philologiae slavicae", "specimens philologiae slavicae", "specimens philosophiae publice", "specimens philosophiae suae", "speciess philosophiae slavicae"
"specimens philological slavicae" » "specimina philologica slavicae", "specimen histological slavicae", "specimen pathological slavicae", "specimens philologica slavica", "specimens philologiae slavicae", "specimens philological polemical", "speciess philological slavicae"
"specimen philosophiae slavicae" » "specimen philologiae slavicae", "specimen philosophiae publice", "specimen philosophiae suae", "species philosophiae slavicae"
"speciess philologica slavicae" » "specimina philologica slavicae", "species physiological slavicae", "species biological slavicae", "speciess philologica slavica", "speciess philologiae slavicae", "speciess 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 ("specimens philological slavicae"))) OR ("speciess philologica slavicae")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"specimen philosophiae slavicae\") or (((((\"specimens philosophiae slavicae\") OR (\"specimens philological slavicae\"))) or (\"speciess philologica slavicae\"))))".
• Removing quotes may allow a broader search: (( specimen philosophiae slavicae ) or ((((( specimens philosophiae slavicae ) OR ( specimens philological slavicae ))) or ( speciess philologica slavicae )))).
• Adding a wildcard symbol may retrieve word variants: (("specimen philosophiae slavicae") or ((((("specimens philosophiae slavicae") OR ("specimens philological slavicae"))) or ("speciess philologica slavicae"))))*.