Perhaps you should try some spelling variations:
"international fast economic surveys" » "international east economic surveys", "international fair economic surveys", "international astm economic surveys", "international fast economic studies", "international fast economic systems", "international art economic surveys", "international trust economic surveys"
"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.

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

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