Perhaps you should try some spelling variations:
"Foundations of modern economica serie" » "Foundations of modern economic serie", "Foundations of poder economico serie", "Foundations of modelo economico serie"
"Foundations of modern economica spines" » "Foundations of modern economic spines", "Foundations of poder economico spines", "Foundations of modelo economico spines", "Foundations of modern economia spines"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("Foundations of modern economica serie") OR ("Foundations of modern economica spines"))~.
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