Perhaps you should try some spelling variations:
"programaaacion lineal codigo." » "programacion lineal codigo." (Expand Search), "programacion visual codigo." (Expand Search), "programaaaacion lineal codigo." (Expand Search), "programasaaacion lineal codigo." (Expand Search)
"programaaaacion de codigo." » "programacion de codigo." (Expand Search), "programacion del codigo." (Expand Search), "programaaaacion del codigo." (Expand Search), "programaaaacion al codigo." (Expand Search), "programaaaaacion de codigo." (Expand Search), "programasaaaacion de 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 (\"programaaaacion de codigo.\"))) OR (\"programaaacion lineal codigo.\"))~".
• Removing quotes may allow a broader search: (((( program _ codigo. ) OR ( programaaaacion de codigo. ))) OR ( programaaacion lineal codigo. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("program _ codigo.") OR ("programaaaacion de codigo."))) OR ("programaaacion lineal codigo."))*.