Perhaps you should try some spelling variations:
"specimina philologica slavica" » "specimina philologiae slavica", "specimens philological slavica"
"specimen histological slices" » "specimens philological slices", "specimen pathological slices", "special histologic slices", "specimen histological aspects", "specimen histological studies", "specimen histological samples"

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: (("specimina philologica slavica") OR ("specimen histological slices"))*.
• Removing quotes may allow a broader search: (( specimina philologica slavica ) or ( specimen histological slices ))*.