Perhaps you should try some spelling variations:
"international africa's economics series" » "international african economics series", "international prices economics series", "international airways economics series", "international africa's economic series", "international africa's economies series", "international africans economic series"
"international self autonomy states" » "international sale autonomy states", "international silk autonomy states", "international sales autonomy states", "international self autonomy notes", "international self autonomy shared", "international self autonomy step", "international user autonomy states"

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 self autonomy states") or ("international africa's economics series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international self autonomy states") OR ("international africa's economics series")).
• Removing quotes may allow a broader search: (( international self autonomy states ) or ( international africa's economics series )).
• Adding a wildcard symbol may retrieve word variants: (("international self autonomy states") or ("international africa's economics series"))*.