Perhaps you should try some spelling variations:
"international poor economies have" » "international pour economies have", "international power economies have", "international port economies have", "international poor economic have", "international poor economies has", "international poor economies change", "international poor economies a"
"national poverty economies were" » "national poverty economic were", "national property economic were", "national diverse economies were", "national poverty economies more", "national poverty economies warren", "national poverty economies learn"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("international poor economies have") or ("national poverty economies were"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international poor economies have") OR ("national poverty economies were")).
• Removing quotes may allow a broader search: (( international poor economies have ) or ( national poverty economies were )).
• Adding a wildcard symbol may retrieve word variants: (("international poor economies have") or ("national poverty economies were"))*.