Perhaps you should try some spelling variations:
"world economic and financial surveys." » "world economic and financial stress.", "world economic and financial services.", "world economic and financial systems.", "world economy and financial surveys."
"world economic and financial studies." » "world economic and financial services.", "world economy and financial studies."
"world economic and financial crises." » "world economic and financial crisis.", "world economy and financial crises."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("world economic and financial surveys.") or ("world economic and financial studies."))) or ("world economic and financial crises."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("world economic and financial surveys.") OR ("world economic and financial studies."))) OR ("world economic and financial crises.")).
• Removing quotes may allow a broader search: (((( world economic and financial surveys. ) or ( world economic and financial studies. ))) or ( world economic and financial crises. )).
• Adding a wildcard symbol may retrieve word variants: (((("world economic and financial surveys.") or ("world economic and financial studies."))) or ("world economic and financial crises."))*.