Perhaps you should try some spelling variations:
"international patient" » "international student", "international joint", "international students"
"international actors" » "international actor"
"international watercourses" » "international actorcourses", "international lawcourses", "international tradecourses"
"international water" » "international actor", "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 actors") or ("international watercourses"))) or ((("international water") OR ("international patient"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("international actors") OR ("international watercourses"))) OR ((("international water") OR ("international patient")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"international actors\") or (\"international watercourses\"))) or (((\"international water\") OR (\"international patient\"))))".
• Removing quotes may allow a broader search: (((( international actors ) or ( international watercourses ))) or ((( international water ) OR ( international patient )))).
• Adding a wildcard symbol may retrieve word variants: (((("international actors") or ("international watercourses"))) or ((("international water") OR ("international patient"))))*.