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

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

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