Perhaps you should try some spelling variations:
"specimens philosophiae suae" » "species philosophers suae", "specimens philological suae", "spencers philosophie suae", "specimens philosophicae sive", "specimens philosophicae quas", "specimens philosophiae essay"
"specimen philosophiae slavicae" » "specimen philosophiae publice", "specimen philologica slavicae", "specimen philosophie islamic"
"specimina philologiae slavicae" » "specimens philological slavicae", "specimina philologica slavicae", "specimina philologica slavica", "specimina philologie slave"
"specimina philologica sive" » "specimens philological sive", "specimina philologica de", "specimina theologica sive", "specimina philosophicae sive"
"species philosophy classical" » "aspects philosophy classical", "sciences philosophy classical", "speaking philosophy classical"

Try widening your search to All Fields.

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 ((((((("specimina philologiae slavicae") OR ("specimens philosophiae suae"))) OR ("species philosophy classical"))) OR ("specimina philologica sive")))).
• Removing quotes may allow a broader search: (( specimen philosophiae slavicae ) or ((((((( specimina philologiae slavicae ) or ( specimens philosophiae suae ))) or ( species philosophy classical ))) or ( specimina philologica sive )))).
• Adding a wildcard symbol may retrieve word variants: (("specimen philosophiae slavicae") or ((((((("specimina philologiae slavicae") or ("specimens philosophiae suae"))) or ("species philosophy classical"))) or ("specimina philologica sive"))))*.