Perhaps you should try some spelling variations:
case » clase (Expand Search), casa (Expand Search), caso (Expand Search)
"Case studies in cultura anthropology" » "Case studies in cultura antropologia" (Expand Search)
"Case estudios in cultura anthropology" » "Case estudios in cultura antropologia" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("Case studies in cultura anthropology") OR ("Case estudios in cultura anthropology"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Case studies in cultura anthropology\") OR (\"Case estudios in cultura anthropology\"))".
• Removing quotes may allow a broader search: (( Case studies in cultura anthropology ) OR ( Case estudios in cultura anthropology )).
• Adding a wildcard symbol may retrieve word variants: (("Case studies in cultura anthropology") OR ("Case estudios in cultura anthropology"))*.