Perhaps you should try some spelling variations:
"sub specimen aeternitatis" » "sub specimens aeternitatis", "sub species aeternitatis", "sub specmen aeternitatis", "sub speckmen aeternitatis"
"sub speci aeternitatis" » "sub spec aeternitatis", "sub speck aeternitatis"
"sub specic aeternitatis" » "sub specc aeternitatis", "sub speckc aeternitatis", "sub specific aeternitatis"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("sub specimen aeternitatis") or ("sub speci aeternitatis"))) or ("sub specic aeternitatis"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sub specimen aeternitatis") OR ("sub speci aeternitatis"))) OR ("sub specic aeternitatis")).
• Removing quotes may allow a broader search: (((( sub specimen aeternitatis ) or ( sub speci aeternitatis ))) or ( sub specic aeternitatis )).
• Adding a wildcard symbol may retrieve word variants: (((("sub specimen aeternitatis") or ("sub speci aeternitatis"))) or ("sub specic aeternitatis"))*.