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