Perhaps you should try some spelling variations:
"international policy economic services" » "international poverty economic services", "national policy economic services", "international policy economics series", "international policy ecological services", "international policy economic studies"
"international prices economic survey" » "international crises economic survey", "international prices econometric survey", "international services economic survey", "international prices economic surveys", "international prices economic security", "international prices economic studies"

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

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