Perhaps you should try some spelling variations:
"international political economic surveys" » "international policy economic surveys", "international political economy surveys", "international ecological economics surveys", "international political economic studies", "international political economic systems"
"international journal ecological services" » "international journal hydrological services", "international journal clinical services", "international journal meteorological services", "international social ecological services", "international local ecological services", "international four ecological services"

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