Perhaps you should try some spelling variations:
"sub specie aeternitatis" » "sub species aeternitatis", "sub specimen aeternitatis", "sub spece aeternitatis", "sub specke 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"sub specie aeternitatis\") OR (\"sub speci aeternitatis\"))) OR (\"sub specic aeternitatis\"))~".
• Removing quotes may allow a broader search: (((( sub specie aeternitatis ) OR ( sub speci aeternitatis ))) OR ( sub specic aeternitatis ))~.
• Adding a wildcard symbol may retrieve word variants: (((("sub specie aeternitatis") OR ("sub speci aeternitatis"))) OR ("sub specic aeternitatis"))*.