Perhaps you should try some spelling variations:
"international waters" » "international patient", "international actor", "international watercourses", "international actors", "international patients", "international laws"
"international actors" » "international actor"
"international water" » "international actor", "international patient", "international law"
"international joint" » "international journal", "international patient", "international issn"

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