Perhaps you should try some spelling variations:
"south arica cooperation." » "south african cooperation.", "south america cooperation.", "south arab cooperation.", "south africa cooperation.", "south amrica cooperation."
"south china cooperation." » "south china connection.", "south technical cooperation.", "south regional cooperation."
"south asia cooperation." » "south asean cooperation.", "south legal cooperation.", "south _ cooperation.", "south africa cooperation."
"south area cooperation." » "south _ cooperation.", "south korea cooperation.", "south africa cooperation.", "south korean cooperation."
"south asian cooperation." » "south african 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 china cooperation."))) or ("south area cooperation."))) or ((("south arica cooperation.") or ("south asian cooperation."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("south asia cooperation.") OR ("south china cooperation."))) OR ("south area cooperation."))) OR ((("south arica cooperation.") OR ("south asian cooperation.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"south asia cooperation.\") OR (\"south china cooperation.\"))) or (\"south area cooperation.\"))) or (((\"south arica cooperation.\") or (\"south asian cooperation.\"))))".
• Removing quotes may allow a broader search: (((((( south asia cooperation. ) OR ( south china cooperation. ))) or ( south area cooperation. ))) or ((( south arica cooperation. ) or ( south asian cooperation. )))).
• Adding a wildcard symbol may retrieve word variants: (((((("south asia cooperation.") OR ("south china cooperation."))) or ("south area cooperation."))) or ((("south arica cooperation.") or ("south asian cooperation."))))*.