Perhaps you should try some spelling variations:
"programas de codigo." » "programa de codigo." (Expand Search), "problemas de codigo." (Expand Search), "programas del codigo." (Expand Search), "programas al codigo." (Expand Search), "programaas de codigo." (Expand Search)
"program _ codigo." » "programa _ codigo." (Expand Search)
"programaada parallel codigo." » "programaaada parallel codigo." (Expand Search), "programada parallel codigo." (Expand Search), "programadas parallel codigo." (Expand Search), "programado parallel codigo." (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"program _ codigo.\") OR (((\"programaada parallel codigo.\") OR (\"programas de codigo.\"))))~".
• Removing quotes may allow a broader search: (( program _ codigo. ) OR ((( programaada parallel codigo. ) OR ( programas de codigo. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("program _ codigo.") OR ((("programaada parallel codigo.") OR ("programas de codigo."))))*.