Perhaps you should try some spelling variations:
"international leste economic surveys" » "international best economic surveys", "international list economic surveys", "international tests economic surveys", "international leste economic studies", "international leste economic systems", "international state economic surveys"
"international rican economics series" » "international african economics series", "international rice economics series", "international american economics series", "international can economics series", "international african economies 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 leste economic surveys") or ("international rican economics series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international leste economic surveys") OR ("international rican economics series")).
• Removing quotes may allow a broader search: (( international leste economic surveys ) or ( international rican economics series )).
• Adding a wildcard symbol may retrieve word variants: (("international leste economic surveys") or ("international rican economics series"))*.