Perhaps you should try some spelling variations:
"programacion deleel codigo." » "programacion del codigo." (Expand Search), "programacion de codigo." (Expand Search), "programacion lineal codigo." (Expand Search)
"programacion al codigo." » "programacion del codigo." (Expand Search), "programacion de codigo." (Expand Search), "programacion en codigo." (Expand Search)
"programa pardel codigo." » "programa del codigo." (Expand Search), "programa para 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: (("programacion al codigo.") OR ((("programa pardel codigo.") OR ("programacion deleel codigo."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"programacion al codigo.\") OR (((\"programa pardel codigo.\") OR (\"programacion deleel codigo.\"))))".
• Removing quotes may allow a broader search: (( programacion al codigo. ) OR ((( programa pardel codigo. ) OR ( programacion deleel codigo. )))).
• Adding a wildcard symbol may retrieve word variants: (("programacion al codigo.") OR ((("programa pardel codigo.") OR ("programacion deleel codigo."))))*.