Perhaps you should try some spelling variations:
"italy / parlaments / congresses" » "italy / parlament / congresses", "italy / parlaments / congress"
"italy / parliaments / congresses" » "italy / parliaments / congress", "italy / parliament / congresses", "italy / parliamentary / congresses"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"italy / parlaments / congresses\") OR (\"italy / parliaments / congresses\"))".
• Removing quotes may allow a broader search: (( italy / parlaments / congresses ) OR ( italy / parliaments / congresses )).
• Adding a wildcard symbol may retrieve word variants: (("italy / parlaments / congresses") OR ("italy / parliaments / congresses"))*.