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

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