Perhaps you should try some spelling variations:
"programacion lineal codigo." » "programacion visual codigo." (Expand Search), "programacion del codigo." (Expand Search), "programaacion lineal codigo." (Expand Search), "programasacion lineal codigo." (Expand Search)
"programaaatica el codigo." » "programaaatica del codigo." (Expand Search), "programaaatica al codigo." (Expand Search), "programaaaatica el codigo." (Expand Search), "programasaaatica el codigo." (Expand Search), "programatica el codigo." (Expand Search), "programaticas el codigo." (Expand Search)
"program _ codigo." » "programa _ codigo." (Expand Search), "programas _ codigo." (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"program _ codigo.\") OR (\"programacion lineal codigo.\"))) OR (\"programaaatica el codigo.\"))~".
• Removing quotes may allow a broader search: (((( program _ codigo. ) OR ( programacion lineal codigo. ))) OR ( programaaatica el codigo. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("program _ codigo.") OR ("programacion lineal codigo."))) OR ("programaaatica el codigo."))*.