Perhaps you should try some spelling variations:
international policy » international poverty, international prices, national policy
"international political economic surveys" » "international political economy surveys", "international ecological economics surveys", "international political economic studies"
"International policy economic systems" » "International policy economic sectors", "International policy economic status"

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 political economic surveys") or ("International policy economic systems"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international political economic surveys") OR ("International policy economic systems")).
• Removing quotes may allow a broader search: (( international political economic surveys ) or ( International policy economic systems )).
• Adding a wildcard symbol may retrieve word variants: (("international political economic surveys") or ("International policy economic systems"))*.