Perhaps you should try some spelling variations:
"programa parallel codigo." » "programa para codigo." (Expand Search), "programasa parallel codigo." (Expand Search)
"programasa de codigo." » "programas de codigo." (Expand Search), "programa de codigo." (Expand Search), "programas del codigo." (Expand Search), "programasa del codigo." (Expand Search), "programasa al codigo." (Expand Search), "programasasa de codigo." (Expand Search)
"program _ codigo." » "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 (\"programasa de codigo.\"))) OR (\"programa parallel codigo.\"))~".
• Removing quotes may allow a broader search: (((( program _ codigo. ) OR ( programasa de codigo. ))) OR ( programa parallel codigo. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("program _ codigo.") OR ("programasa de codigo."))) OR ("programa parallel codigo."))*.