Perhaps you should try some spelling variations:
"international cash economy evidence" » "international case economy evidence", "international calls economy evidence", "international cargo economy evidence", "international cash economies evidence", "international cash econometric evidence", "international cash country evidence", "international based economy evidence", "international host economy evidence", "international u.s economy evidence"
"international oil economies theory" » "international aid economies theory", "international air economies theory", "international bond economies theory", "international oil economic theory", "international oil economies through", "international oil countries theory", "international local economies theory", "international world economies theory", "international open economies theory"

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

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