Perhaps you should try some spelling variations:
"international waters" » "international patient", "international watercourses", "international law", "international patients", "international laws", "international trades"
"international trades" » "international trade", "international transfer", "international studies"
"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.

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