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 specics aeternitatis" » "sub specic aeternitatis", "sub specifics aeternitatis", "sub speciosa aeternitatis", "sub speciccs aeternitatis", "sub speccs aeternitatis", "sub speckcs 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 species aeternitatis") OR ("sub specics aeternitatis"))))) or ("sub speci aeternitatis"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sub specie aeternitatis") OR ((("sub species aeternitatis") OR ("sub specics aeternitatis"))))) OR ("sub speci aeternitatis")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"sub specie aeternitatis\") or (((\"sub species aeternitatis\") OR (\"sub specics aeternitatis\"))))) or (\"sub speci aeternitatis\"))".
• Removing quotes may allow a broader search: (((( sub specie aeternitatis ) or ((( sub species aeternitatis ) OR ( sub specics aeternitatis ))))) or ( sub speci aeternitatis )).
• Adding a wildcard symbol may retrieve word variants: (((("sub specie aeternitatis") or ((("sub species aeternitatis") OR ("sub specics aeternitatis"))))) or ("sub speci aeternitatis"))*.