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