Perhaps you should try some spelling variations:
institution der » institutionen der, konstitution der, institutionen des
storia antica » storia gotica, storia romantica, historia antiga
instituto de » institut der
istituti di » instituti di, istituto di, istituti pii
%contributo » %contributor, %contribute, %contributi

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: %contributo della%((((instituto de) OR (institution der))) OR (istituti di)) storia antica%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%contributo della%((((instituto de) OR (institution der))) or (istituti di)) storia antica%22".
• Adding a wildcard symbol may retrieve word variants: %contributo della%((((instituto de) OR (institution der))) or (istituti di)) storia antica%22*.