Perhaps you should try some spelling variations:
"international waters" » "international patient", "international actor", "international law", "international actors", "international patients", "international laws"
"international watercourses" » "international actorcourses", "international patientcourses", "international lawcourses"
"international water" » "international actor", "international patient", "international law"

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