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