Perhaps you should try some spelling variations:
contributi alla » contributi dalla, contributo alla, contribute all
storia antica » storia gotica, storia romantica, historia antiga
instituto de » institut der, institution der
instituti di » instituti _, instituti a, institution die
istituti di » istituto di, istituti pii, istituiti sic

Try widening your search to All Fields.

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: %contributi alla%((instituto de) OR (((istituti di) OR (instituti di)))) storia antica%22.
• Adding a wildcard symbol may retrieve word variants: %contributi alla%((instituto de) or (((istituti di) or (instituti di)))) storia antica%22*.