Perhaps you should try some spelling variations:
"international patients" » "international patient", "international students", "international segments"
"international waters" » "international patient", "international watercourses", "international law", "international patients", "international laws", "international trades"
"international actors" » "international editions"
"international actor" » "international edition"
"international water" » "international patient", "international law", "international trade"

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