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

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