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