Perhaps you should try some spelling variations:
"international political economies were" » "international policy economies were", "international political economic were", "international political economy were", "international ecological economics were", "international political economies more", "international political economies warren", "international political economies learn"
"international airport economic space" » "international transport economic space", "international airshow economic space", "international airports economic space", "international airport economics space", "international support economic space", "international airport economic impact", "international airport economic sphere", "international airport economic shock"

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