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