Perhaps you should try some spelling variations:
"international policy economic surveys" » "international poverty economic surveys", "international prices economic surveys", "national policy economic surveys", "international policy economic studies", "international policy economic systems"
"international political recovery strategy" » "international biological recovery strategy", "international ecological recovery strategy", "international political economy strategy", "international political poverty strategy", "international political recovery rate", "international political recovery rates"

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