Perhaps you should try some spelling variations:
"entornos visuales oecc." » "entornos digitales oecc.", "estudios visuales oecc.", "entornos locales oecc.", "entornos visuales en.", "entornos visuales de.", "entornos visuales del."
"entornos virtuales oecc." » "entornos virtuales de.", "entornos virtuales en.", "entornos virtuales del."
"entornos virtuales tic." » "entornos virtuales de.", "entornos virtuales en.", "entornos virtuales y."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("entornos virtuales oecc.") OR ("entornos virtuales tic."))) or ("entornos visuales oecc."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("entornos virtuales oecc.") OR ("entornos virtuales tic."))) OR ("entornos visuales oecc."))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"entornos virtuales oecc.\") OR (\"entornos virtuales tic.\"))) or (\"entornos visuales oecc.\"))*".
• Removing quotes may allow a broader search: (((( entornos virtuales oecc. ) OR ( entornos virtuales tic. ))) or ( entornos visuales oecc. ))*.