Perhaps you should try some spelling variations:
"programaaacion visual codigo." » "programacion visual codigo." (Expand Search), "programacion lineal codigo." (Expand Search), "programaaaacion visual 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), "programaas a codigo." (Expand Search)
"program _ 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: (("program _ codigo.") OR ((("programaaacion visual codigo.") OR ("programas a codigo."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"program _ codigo.\") OR (((\"programaaacion visual codigo.\") OR (\"programas a codigo.\"))))".
• Removing quotes may allow a broader search: (( program _ codigo. ) OR ((( programaaacion visual codigo. ) OR ( programas a codigo. )))).
• Adding a wildcard symbol may retrieve word variants: (("program _ codigo.") OR ((("programaaacion visual codigo.") OR ("programas a codigo."))))*.