Perhaps you should try some spelling variations:
"programaaaaacion de codigo." » "programacion de codigo." (Expand Search), "programaaaaacion del codigo." (Expand Search), "programaaaaacion al codigo." (Expand Search)
"programadas a codigo." » "programas y codigo." (Expand Search), "programado y codigo." (Expand Search), "programadas al codigo." (Expand Search), "programadas el codigo." (Expand Search)
"programas _ codigo." » "programa _ codigo." (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("programas _ codigo.") OR ((("programadas a codigo.") OR ("programaaaaacion de codigo."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"programas _ codigo.\") OR (((\"programadas a codigo.\") OR (\"programaaaaacion de codigo.\"))))".
• Removing quotes may allow a broader search: (( programas _ codigo. ) OR ((( programadas a codigo. ) OR ( programaaaaacion de codigo. )))).
• Adding a wildcard symbol may retrieve word variants: (("programas _ codigo.") OR ((("programadas a codigo.") OR ("programaaaaacion de codigo."))))*.