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

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