Perhaps you should try some spelling variations:
"entorno virtuales tic." » "entornos virtuales tic.", "entorno virtual tic.", "entornos visuales tic.", "entorno virtuales de.", "entorno virtuales en.", "entorno virtuales y."
"estudios visuales del." » "estudios sociales del.", "estudios visual del.", "estudios visuales en.", "estudios visual de.", "estudios visuales enl.", "estudios visuales yl."
"estudios visuales de." » "estudios sociales de.", "estudios visual de.", "estudios visuales en.", "estudios visuales y."

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

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