Perhaps you should try some spelling variations:
"south africa's cooperation." » "south african cooperation.", "south america cooperation.", "south arab cooperation."
"south arica cooperation." » "south african cooperation.", "south america cooperation.", "south china cooperation.", "south amrica cooperation."
"south asia cooperation." » "south asean cooperation.", "south china cooperation.", "south legal cooperation."
"south area cooperation." » "south _ cooperation.", "south korea cooperation.", "south korean cooperation.", "south koreas cooperation."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("south asia cooperation.") or ("south area cooperation."))) or ((((("south arica cooperation.") or ("south asian cooperation."))) or ("south africa's cooperation."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("south asia cooperation.") OR ("south area cooperation."))) OR ((((("south arica cooperation.") OR ("south asian cooperation."))) OR ("south africa's cooperation.")))).
• Removing quotes may allow a broader search: (((( south asia cooperation. ) or ( south area cooperation. ))) or ((((( south arica cooperation. ) or ( south asian cooperation. ))) or ( south africa's cooperation. )))).
• Adding a wildcard symbol may retrieve word variants: (((("south asia cooperation.") or ("south area cooperation."))) or ((((("south arica cooperation.") or ("south asian cooperation."))) or ("south africa's cooperation."))))*.