Perhaps you should try some spelling variations:
"international patient" » "international student", "international water", "international students"
"international waters" » "international water", "international actor", "international law"
"international joint" » "international journal", "international tourists", "international student"
"international issn" » "international human", "international law", "international 4"

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