Perhaps you should try some spelling variations:
"sub speci aeternitatis" » "sub speck aeternitatis", "sub specki aeternitatis", "sub spei aeternitatis", "sub peci aeternitatis"
"sub specic aeternitatis" » "sub speckc aeternitatis", "sub speckic aeternitatis", "sub speic aeternitatis", "sub pecic aeternitatis", "sub specific aeternitatis"
"sub spec aeternitatis" » "sub speck aeternitatis", "sub spe aeternitatis", "sub pec 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 speci aeternitatis") OR ("sub spec aeternitatis"))) or ("sub specic aeternitatis"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sub speci aeternitatis") OR ("sub spec aeternitatis"))) OR ("sub specic aeternitatis")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"sub speci aeternitatis\") OR (\"sub spec aeternitatis\"))) or (\"sub specic aeternitatis\"))".
• Removing quotes may allow a broader search: (((( sub speci aeternitatis ) OR ( sub spec aeternitatis ))) or ( sub specic aeternitatis )).
• Adding a wildcard symbol may retrieve word variants: (((("sub speci aeternitatis") OR ("sub spec aeternitatis"))) or ("sub specic aeternitatis"))*.