Perhaps you should try some spelling variations:
universitarios de » universitario en, universitaria en, universitaria y
della biblioteca » la biblioteca
universitario di » universitario de, universitario del, universitario en
una biblioteca » la biblioteca, _ biblioteca
del polo » del polso, del pozo, del pelo
pluriverso » pluriverse, pluriversal

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: pluriverso – quaderni ((della biblioteca) OR (una biblioteca)) del polo ((universitario di) OR (universitarios de)) prato.
• The words AND, OR and NOT may confuse the search; try adding quotes: "pluriverso – quaderni ((della biblioteca) OR (una biblioteca)) del polo ((universitario di) or (universitarios de)) prato".
• Adding a wildcard symbol may retrieve word variants: pluriverso – quaderni ((della biblioteca) OR (una biblioteca)) del polo ((universitario di) or (universitarios de)) prato*.