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