Perhaps you should try some spelling variations:
"Cuban economicas internacionales" » "Cuban economia internacional"
"Cuban tecnicas internacionales" » "Cuban eticas internacionales", "Cuban practicas internacionales", "Cuban terminos internacionales"
"Cuban tecnica internacional" » "Cuban economica internacional", "Cuban economico internacional", "Cuban economia internacional"
"Cuban medical internationalism" » "Cuban medica internationalism", "Cuban medieval internationalism"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("Cuban medical internationalism") OR ((((("Cuban tecnicas internacionales") OR ("Cuban tecnica internacional"))) OR ("Cuban economicas internacionales"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Cuban medical internationalism\") OR (((((\"Cuban tecnicas internacionales\") OR (\"Cuban tecnica internacional\"))) OR (\"Cuban economicas internacionales\"))))".
• Removing quotes may allow a broader search: (( Cuban medical internationalism ) OR ((((( Cuban tecnicas internacionales ) OR ( Cuban tecnica internacional ))) OR ( Cuban economicas internacionales )))).
• Adding a wildcard symbol may retrieve word variants: (("Cuban medical internationalism") OR ((((("Cuban tecnicas internacionales") OR ("Cuban tecnica internacional"))) OR ("Cuban economicas internacionales"))))*.