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