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 dal codigo." » "programacion del codigo." (Expand Search), "programacion de codigo." (Expand Search), "programacion para codigo." (Expand Search), "programacion el codigo." (Expand Search), "programacion a codigo." (Expand Search), "programacion ddel codigo." (Expand Search)
"programa al codigo." » "programa del codigo." (Expand Search), "programa de codigo." (Expand Search), "programa la 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 dal codigo.") OR ((("programa al codigo.") OR ("programacion deleel codigo."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"programacion dal codigo.\") OR (((\"programa al codigo.\") OR (\"programacion deleel codigo.\"))))".
• Removing quotes may allow a broader search: (( programacion dal codigo. ) OR ((( programa al codigo. ) OR ( programacion deleel codigo. )))).
• Adding a wildcard symbol may retrieve word variants: (("programacion dal codigo.") OR ((("programa al codigo.") OR ("programacion deleel codigo."))))*.