Perhaps you should try some spelling variations:
"south african cooperation." » "south america cooperation.", "south asean cooperation.", "south asia cooperation.", "south africa cooperation.", "south africa's cooperation.", "north africa cooperation."
"south china cooperation." » "south asia cooperation.", "south china connection.", "south technical cooperation."
"south arica cooperation." » "south america cooperation.", "south asia cooperation.", "south arab cooperation.", "south africa cooperation.", "south amrica cooperation."
"south area cooperation." » "south _ cooperation.", "south korea cooperation.", "south asia cooperation.", "south africa cooperation."
"south asian cooperation." » "south asia 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 china cooperation.") or ((((((("south arica cooperation.") or ("south area cooperation."))) or ("south asian cooperation."))) or ("south african cooperation."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("south china cooperation.") OR ((((((("south arica cooperation.") OR ("south area cooperation."))) OR ("south asian cooperation."))) OR ("south african cooperation.")))).
• Removing quotes may allow a broader search: (( south china cooperation. ) or ((((((( south arica cooperation. ) or ( south area cooperation. ))) or ( south asian cooperation. ))) or ( south african cooperation. )))).
• Adding a wildcard symbol may retrieve word variants: (("south china cooperation.") or ((((((("south arica cooperation.") or ("south area cooperation."))) or ("south asian cooperation."))) or ("south african cooperation."))))*.