Perhaps you should try some spelling variations:
estudios » studio, estudieos, estudyos, esaudios
estudieos » estudio, studiens, estudos, estudieeos, estudyeos, esaudieos
studi » studie, study, saudi
studies » studiees, studyes, saudies
studyes » studes, studys, studiens
economicus » economics, economicas, economicos

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((estudios OR estudieos) or studi) or (studies or studyes)) economicus _ finance.~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((estudios OR estudieos) OR studi) OR (studies OR studyes)) economicus _ finance..
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((estudios OR estudieos) or studi) or (studies or studyes)) economicus _ finance.".
• Adding a wildcard symbol may retrieve word variants: (((estudios OR estudieos) or studi) or (studies or studyes)) economicus _ finance.*.