Perhaps you should try some spelling variations:
"international brief economic studies" » "international series economic studies", "international relief economic studies", "international border economic studies", "international brief economic status", "international tariff economic studies", "international britain economic studies", "international british economic studies"
"international prices economy series" » "international prices economic series", "international driven economy series", "international rich economy series", "international prices economics series"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("international brief economic studies") or ("international prices economy series"))~.
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