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