Perhaps you should try some spelling variations:
"international waters" » "international patient", "international watercourses", "international trade", "international patients", "international trades", "international transfers"
"international trades" » "international trade", "international transfer", "international studies"
"international actor" » "international edition"
"international water" » "international patient", "international trade", "international transfer"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("international waters") or ("international trades"))) or ("international actor"))) or ((("international water") OR ("international law"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("international waters") OR ("international trades"))) OR ("international actor"))) OR ((("international water") OR ("international law")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"international waters\") or (\"international trades\"))) or (\"international actor\"))) or (((\"international water\") OR (\"international law\"))))".
• Removing quotes may allow a broader search: (((((( international waters ) or ( international trades ))) or ( international actor ))) or ((( international water ) OR ( international law )))).
• Adding a wildcard symbol may retrieve word variants: (((((("international waters") or ("international trades"))) or ("international actor"))) or ((("international water") OR ("international law"))))*.