Perhaps you should try some spelling variations:
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"colloque, congres et conferences sur le xviiie siecles" » "colloque, congres _ conference sur le xviiie siecles" (Expand Search), "colloque, congres et conferences sur le xviiie siecle" (Expand Search), "colloque, congres et conferences sur au xviiie siecles" (Expand Search), "colloque, congres et conferences sur la xviiie siecles" (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 et conferences sur le xvie siecles") OR ("colloque, congres et conferences sur le xviiie siecles"))) or ("colloque, congres a conference where le xvie siecle"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("colloque, congres et conferences sur le xvie siecles") OR ("colloque, congres et conferences sur le xviiie siecles"))) OR ("colloque, congres a conference where le xvie siecle")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"colloque, congres et conferences sur le xvie siecles\") OR (\"colloque, congres et conferences sur le xviiie siecles\"))) or (\"colloque, congres a conference where le xvie siecle\"))".
• Removing quotes may allow a broader search: (((( colloque, congres et conferences sur le xvie siecles ) OR ( colloque, congres et conferences sur le xviiie siecles ))) or ( colloque, congres a conference where le xvie siecle )).
• Adding a wildcard symbol may retrieve word variants: (((("colloque, congres et conferences sur le xvie siecles") OR ("colloque, congres et conferences sur le xviiie siecles"))) or ("colloque, congres a conference where le xvie siecle"))*.