Perhaps you should try some spelling variations:
"international patient" » "international student", "international joint", "international students"
"international waters" » "international watercourses", "international law", "international trade", "international laws", "international trades", "international transfers"
"international actor" » "international edition"
"international water" » "international law", "international trade", "international transfer"

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

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