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