Perhaps you should try some spelling variations:
"specimens philological slavicae" » "specimina philologica slavicae", "specimen histological slavicae", "specimen pathological slavicae", "specimens philologica slavica", "specimens philologiae slavicae", "specimens philological polemical"
"specimen philosophiae slavicae" » "specimen philologiae slavicae", "specimen philosophiae publice", "specimen philosophie islamic"
"speciess philologica slavicae" » "specimina philologica slavicae", "species physiological slavicae", "species biological slavicae", "speciess philologica slavica", "speciess philologiae slavicae", "speciess philologie slave"
"specimen philosophiae suae" » "specimen philosophicae sive", "specimen philosophicae quas", "specimen philosophiae essay"

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