Perhaps you should try some spelling variations:
"international tourists" » "international students", "international journal"
"international patient" » "international student", "international water", "international students"
"international waters" » "international water", "international actor", "international watercourses"
"international joint" » "international journal", "international issn", "international student"

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