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