Perhaps you should try some spelling variations:
"sub specimen aeternitatis" » "sub specimens aeternitatis", "sub species aeternitatis", "sub specicmen aeternitatis", "sub specmen aeternitatis"
"sub speci aeternitatis" » "sub specic aeternitatis", "sub spec aeternitatis"
"sub speck aeternitatis" » "sub speak aeternitatis", "sub speek aeternitatis", "sub spec 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 speck aeternitatis"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("sub specimen aeternitatis") OR ((("sub speci aeternitatis") OR ("sub speck aeternitatis")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"sub specimen aeternitatis\") or (((\"sub speci aeternitatis\") OR (\"sub speck aeternitatis\"))))".
• Removing quotes may allow a broader search: (( sub specimen aeternitatis ) or ((( sub speci aeternitatis ) OR ( sub speck aeternitatis )))).
• Adding a wildcard symbol may retrieve word variants: (("sub specimen aeternitatis") or ((("sub speci aeternitatis") OR ("sub speck aeternitatis"))))*.