Perhaps you should try some spelling variations:
"cultural mexicanas en colombia." » "cultura mexicana en colombia.", "cultural americana en colombia.", "cultural mexico en colombia.", "cultural mexicana en colombia.", "cultural mexicanos en colombia.", "cultural mexicano en colombia."
"cultural economica del colombia." » "cultura economica del colombia.", "cultural economics del colombia.", "cultura economia del colombia.", "cultural economica de colombia.", "cultural economia del colombia.", "cultural economica en colombia.", "cultural economica del colombian.", "cultural economica el colombia.", "cultural economica veil colombia."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("cultural mexicanas en colombia.") or ("cultural economica del colombia."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cultural mexicanas en colombia.") OR ("cultural economica del colombia.")).
• Removing quotes may allow a broader search: (( cultural mexicanas en colombia. ) or ( cultural economica del colombia. )).
• Adding a wildcard symbol may retrieve word variants: (("cultural mexicanas en colombia.") or ("cultural economica del colombia."))*.