Perhaps you should try some spelling variations:
"colloque, congres di conferenze where le xvie siecle" » "colloque, congres di conference where le xvie siecle" (Expand Search), "colloque, congres di conference held le xvie siecle" (Expand Search), "colloque, congres di conference which le xvie siecle" (Expand Search), "colloque, congres a conference where le xvie siecle" (Expand Search), "colloque, congres di conferenze where le xvie siecles" (Expand Search), "colloque, congres di conferenze where le xviiie siecle" (Expand Search), "colloque, congres di conferenze where le xxe siecle" (Expand Search), "colloque, congres di conferenze where _ xvie siecle" (Expand Search)
"colloque, congres et conferences sur le xvie siecle" » "colloque, congres a conference sur le xvie siecle" (Expand Search), "colloque, congres et conferences sur le xvie siecles" (Expand Search), "colloque, congres et conferences sur le xviiie siecle" (Expand Search), "colloque, congres et conferences sur le xxe siecle" (Expand Search), "colloque, congres et conferences sur la xvie siecle" (Expand Search)
"colloque, congres _ conference sur le xvie siecle" » "colloque, congres _ conference _ le xvie siecle" (Expand Search), "colloque, congres _ conference where le xvie siecle" (Expand Search), "colloque, congres _ conference sur le xvie siecles" (Expand Search), "colloque, congres _ conference sur le xviiie siecle" (Expand Search), "colloque, congres _ conference sur le xxe siecle" (Expand Search), "colloque, congres _ conference sur la xvie siecle" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("colloque, congres di conferenze where le xvie siecle") or ((("colloque, congres et conferences sur le xvie siecle") OR ("colloque, congres _ conference sur le xvie siecle"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("colloque, congres di conferenze where le xvie siecle") OR ((("colloque, congres et conferences sur le xvie siecle") OR ("colloque, congres _ conference sur le xvie siecle")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"colloque, congres di conferenze where le xvie siecle\") or (((\"colloque, congres et conferences sur le xvie siecle\") OR (\"colloque, congres _ conference sur le xvie siecle\"))))".
• Removing quotes may allow a broader search: (( colloque, congres di conferenze where le xvie siecle ) or ((( colloque, congres et conferences sur le xvie siecle ) OR ( colloque, congres _ conference sur le xvie siecle )))).
• Adding a wildcard symbol may retrieve word variants: (("colloque, congres di conferenze where le xvie siecle") or ((("colloque, congres et conferences sur le xvie siecle") OR ("colloque, congres _ conference sur le xvie siecle"))))*.