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

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 water") OR ("international trade"))) OR ("international actor"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"international waters\") or (((((\"international water\") OR (\"international trade\"))) or (\"international actor\"))))~".
• Removing quotes may allow a broader search: (( international waters ) or ((((( international water ) OR ( international trade ))) or ( international actor ))))~.
• Adding a wildcard symbol may retrieve word variants: (("international waters") or ((((("international water") OR ("international trade"))) or ("international actor"))))*.