Perhaps you should try some spelling variations:
"international economic socioeconomic status" » "international economics socioeconomic status", "international economics economic status", "international economy macroeconomic status", "international ethiopia socioeconomic status"
"international crisis economic theories" » "international credit economic theories", "international civil economic theories", "international risk economic theories", "international crisis economic theory", "international china's economic theories"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("international economic socioeconomic status") or ("international crisis economic theories"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international economic socioeconomic status") OR ("international crisis economic theories"))*.
• Removing quotes may allow a broader search: (( international economic socioeconomic status ) or ( international crisis economic theories ))*.