Perhaps you should try some spelling variations:
"international crisis economic studies" » "international credit economic studies", "international civil economic studies", "international risk economic studies", "international crisis economic status", "international crisis economic surveys", "international china's economic studies"
"international policy economy series" » "international poverty economy series", "international prices economy series", "national policy economy series", "international policy economic series", "international policy autonomy series", "international poppy economy series"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("international crisis economic studies") or ("international policy economy series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international crisis economic studies") OR ("international policy economy series")).
• Removing quotes may allow a broader search: (( international crisis economic studies ) or ( international policy economy series )).
• Adding a wildcard symbol may retrieve word variants: (("international crisis economic studies") or ("international policy economy series"))*.