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"
"specimen philosophiae slavicae" » "specimen philosophiae publice", "specimen philologica slavicae", "specimen philosophiae suae"
"species philosophiae slavicae" » "species philosophiae publice", "species philologica slavicae", "species philosophiae suae", "species philosophy slavicae", "species philosophers slavicae", "spencers philosophie slavicae"
"specimina philologiae slavicae" » "specimina philologica slavicae", "specimens philological slavicae", "specimina philologica slavica"
"specimina philologie slave" » "specimina philologica slave", "specimens philological 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 ("species philosophiae slavicae"))) OR ((("specimens philosophiae slavicae") OR ((("specimina philologiae slavicae") OR ("specimina philologie slave")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"specimen philosophiae slavicae\") or (\"species philosophiae slavicae\"))) or (((\"specimens philosophiae slavicae\") or (((\"specimina philologiae slavicae\") OR (\"specimina philologie slave\"))))))".
• Removing quotes may allow a broader search: (((( specimen philosophiae slavicae ) or ( species philosophiae slavicae ))) or ((( specimens philosophiae slavicae ) or ((( specimina philologiae slavicae ) OR ( specimina philologie slave )))))).
• Adding a wildcard symbol may retrieve word variants: (((("specimen philosophiae slavicae") or ("species philosophiae slavicae"))) or ((("specimens philosophiae slavicae") or ((("specimina philologiae slavicae") OR ("specimina philologie slave"))))))*.