Perhaps you should try some spelling variations:
"serie antropologia y ecologia." » "de antropologia y ecologia.", "serie antologias y ecologia.", "sociales antropologia y ecologia.", "serie antropologia de ecologia.", "serie antropologia la ecologia.", "serie antropologia y economia."
"serie antropologia general ecologia." » "de antropologia general ecologia.", "serie antologias general ecologia.", "sociales antropologia general ecologia.", "serie antropologia general cronologia.", "serie antropologia general morfologia.", "serie antropologia generals colombia."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("serie antropologia y ecologia.") or ("serie antropologia general ecologia."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie antropologia y ecologia.") OR ("serie antropologia general ecologia.")).
• Removing quotes may allow a broader search: (( serie antropologia y ecologia. ) or ( serie antropologia general ecologia. )).
• Adding a wildcard symbol may retrieve word variants: (("serie antropologia y ecologia.") or ("serie antropologia general ecologia."))*.