Perhaps you should try some spelling variations:
"estudios minor serie." » "estudios liber serie.", "estudios andinos serie.", "estudios mentor serie.", "estudios maior series."
"estudios maior serie." » "estudios marcial serie.", "estudios nativos serie.", "estudios maior series.", "estudios mayo serie.", "estudios mentor serie."
"estudios urbanos desde." » "estudios urbano desde.", "estudios urbana desde.", "estudios cubanos desde."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("estudios urbanos desde.") or ((("estudios maior serie.") OR ("estudios minor serie."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("estudios urbanos desde.") OR ((("estudios maior serie.") OR ("estudios minor serie.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"estudios urbanos desde.\") or (((\"estudios maior serie.\") OR (\"estudios minor serie.\"))))".
• Removing quotes may allow a broader search: (( estudios urbanos desde. ) or ((( estudios maior serie. ) OR ( estudios minor serie. )))).
• Adding a wildcard symbol may retrieve word variants: (("estudios urbanos desde.") or ((("estudios maior serie.") OR ("estudios minor serie."))))*.