Perhaps you should try some spelling variations:
"institut de protection international" » "institut de proteccion internacional", "institut de proyeccion internacional", "institut de prevention international", "institut de proteccion international", "institut _ protection international", "institut de proyeccion international", "instituto de protection international", "instituto del protection international", "institudo de protection international"
"institutos de protection international" » "institutos de proteccion internacional", "institutos de proyeccion internacional", "institutos de prevention international", "institutos de proteccion international", "institutos _ protection international", "institutos de proyeccion international", "instituto de protection international", "institucion de protection international", "instituciones de protection international"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("institut de protection international") OR ("institutos de protection international"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"institut de protection international\") OR (\"institutos de protection international\"))".
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• Adding a wildcard symbol may retrieve word variants: (("institut de protection international") OR ("institutos de protection international"))*.