Perhaps you should try some spelling variations:
institutionen des » institutionen der
historia antiga » historia antigua, historia antiqua, historia argentina
istituto di » instituto de, instituto ad
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 (institutionen des))) OR (istituti di)) historia antiga%22.
• Adding a wildcard symbol may retrieve word variants: %contributo della%((((istituto di) or (institutionen des))) or (istituti di)) historia antiga%22*.