Perhaps you should try some spelling variations:
"international ecological economy studies" » "international economics economy studies", "international economic economy studies", "international economies economy studies", "international ecological economics studies", "international political economy studies", "international ecological economic studies"
"international political economic theory" » "international policy economic theory", "international political economy theory", "international ecological economics theory"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("international ecological economy studies") or ("international political economic theory"))~.
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