Perhaps you should try some spelling variations:
"international patient" » "international student", "international joint", "international water"
"international waters" » "international water", "international actor", "international watercourses"
"international actors" » "international actor", "international water"
"international trade" » "international law", "international student", "international finance"

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 patient") or ("international trade"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("international waters") OR ("international actors"))) OR ((("international patient") OR ("international trade")))).
• Removing quotes may allow a broader search: (((( international waters ) or ( international actors ))) or ((( international patient ) or ( international trade )))).
• Adding a wildcard symbol may retrieve word variants: (((("international waters") or ("international actors"))) or ((("international patient") or ("international trade"))))*.