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 water" » "international actor", "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.

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