Perhaps you should try some spelling variations:
"programaaaacion a codigo." » "programacion _ codigo." (Expand Search), "programaaaacion al codigo." (Expand Search), "programaaaacion el codigo." (Expand Search), "programaaaaacion a codigo." (Expand Search), "programasaaaacion a codigo." (Expand Search)
"programaaticas y codigo." » "problematicas y codigo." (Expand Search), "programaaticas al codigo." (Expand Search), "programaaticas el codigo." (Expand Search), "programaaaticas y codigo." (Expand Search), "programasaaticas y codigo." (Expand Search)
"program _ codigo." » "programa _ codigo." (Expand Search), "programas _ 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 (\"programaaaacion a codigo.\"))) OR (\"programaaticas y codigo.\"))~".
• Removing quotes may allow a broader search: (((( program _ codigo. ) OR ( programaaaacion a codigo. ))) OR ( programaaticas y codigo. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("program _ codigo.") OR ("programaaaacion a codigo."))) OR ("programaaticas y codigo."))*.