Perhaps you should try some spelling variations:
"international political economic survey" » "international policy economic survey", "international political economy survey", "international ecological economics survey", "international political economic surveys", "international political economic security", "international political economic studies"
"international journal ecological services" » "international capital ecological services", "international journal hydrological services", "international journal clinical services", "international journal meteorological services", "international social 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 survey") or ("international journal ecological services"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international political economic survey") OR ("international journal ecological services")).
• Removing quotes may allow a broader search: (( international political economic survey ) or ( international journal ecological services )).
• Adding a wildcard symbol may retrieve word variants: (("international political economic survey") or ("international journal ecological services"))*.