Perhaps you should try some spelling variations:
"entornos digitales oecc." » "entorno digital oecc.", "entornos digitales en.", "entornos digitales de.", "entornos digitales el."
"entornos digitales y." » "entorno digital y.", "entornos digitales en.", "entornos digitales de."
"entornos virtuales oecc." » "entornos virtuales de.", "entornos virtuales en.", "entornos virtuales tic."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("entornos digitales oecc.") OR ("entornos virtuales oecc."))) OR ("entornos digitales y."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"entornos digitales oecc.\") OR (\"entornos virtuales oecc.\"))) OR (\"entornos digitales y.\"))".
• Removing quotes may allow a broader search: (((( entornos digitales oecc. ) OR ( entornos virtuales oecc. ))) OR ( entornos digitales y. )).
• Adding a wildcard symbol may retrieve word variants: (((("entornos digitales oecc.") OR ("entornos virtuales oecc."))) OR ("entornos digitales y."))*.