Perhaps you should try some spelling variations:
"ethnology ecuatorial una." » "ethnology ecuador una.", "ethnology ecuatorial ana.", "ethnology ecuatoriana una.", "ethnology ecuatorial guinea."
"technology general guia." » "tecnologia general guia.", "psychology general guia.", "sociology general guia.", "technology general laura.", "technology general maria.", "technology general para."
"ethnology central una." » "mythology central una.", "ethnology central un.", "ethnology central en.", "ethnology central s.a."

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

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