Perhaps you should try some spelling variations:
international ecological » international technological, international psychological, international economics
"international political economic theories" » "international policy economic theories", "international political economy theories", "international ecological economics theories", "international political economic theory", "international political economics series"
"International ecological economic status" » "International ecological economics status", "International economics economic status", "International ecology economic status", "International ecological economic sectors", "International ecological socioeconomic status"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("International ecological economic status") OR ("international political economic theories"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"International ecological economic status\") OR (\"international political economic theories\"))".
• Removing quotes may allow a broader search: (( International ecological economic status ) OR ( international political economic theories )).
• Adding a wildcard symbol may retrieve word variants: (("International ecological economic status") OR ("international political economic theories"))*.