Perhaps you should try some spelling variations:
"international planned economies some" » "international panel economies some", "international plant economies some", "international land economies some", "international advanced economies some", "international planned economics some", "international planned economies more", "international planned economies size"
"international air economies have" » "international aid economies have", "international airshow economies have", "international airport economies have", "international air economies has", "international air economies change", "international air economies a", "international main economies have", "international war economies have", "international oil economies have"

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 planned economies some") or ("international air economies have"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international planned economies some") OR ("international air economies have")).
• Removing quotes may allow a broader search: (( international planned economies some ) or ( international air economies have )).
• Adding a wildcard symbol may retrieve word variants: (("international planned economies some") or ("international air economies have"))*.