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