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