Perhaps you should try some spelling variations:
"international political economic theory" » "international policy economic theory", "international political economy theory", "international ecological economics theory"
"international poverty economic services" » "national poverty economic services", "international poverty economics series", "international poverty ecological services", "international poverty economic studies", "international property economic services", "international forestry economic services", "international policy economic services"

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 theory") or ("international poverty economic services"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international political economic theory") OR ("international poverty economic services"))*.
• Removing quotes may allow a broader search: (( international political economic theory ) or ( international poverty economic services ))*.