Perhaps you should try some spelling variations:
"international rican economy series" » "international african economy series", "international rice economy series", "international american economy series", "international rican economics series", "international roman economy series", "international rich economy series"
"international best economic surveys" » "international bank economic surveys", "international business economic surveys", "international best economic studies", "international best economic systems", "international west economic surveys", "international leste economic surveys", "international east economic surveys"

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

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