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