Perhaps you should try some spelling variations:
institution der » institutionen der, konstitution der, institutionen des
historia antiga » historia antigua, historia antiqua, historia argentina
instituto ad » instituto de, instituto _, institutos de
institut der » institut fur
istituto di » instituto de
istituti di » instituti di, istituti pii, istituiti sic
%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%((((((istituto di) OR (instituto ad))) OR (((institut der) OR (institution der))))) OR (istituti di)) historia antiga%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%contributo della%((((((istituto di) OR (instituto ad))) or (((institut der) or (institution der))))) or (istituti di)) historia antiga%22".
• Adding a wildcard symbol may retrieve word variants: %contributo della%((((((istituto di) OR (instituto ad))) or (((institut der) or (institution der))))) or (istituti di)) historia antiga%22*.