Perhaps you should try some spelling variations:
"programacion paralelel codigo." » "programacion paralela codigo." (Expand Search), "programacion para codigo." (Expand Search)
"programacion a codigo." » "programacion _ codigo." (Expand Search), "programacion de codigo." (Expand Search), "programacion en codigo." (Expand Search), "programacion el codigo." (Expand Search)
"programa al codigo." » "programa del codigo." (Expand Search), "programa de codigo." (Expand Search), "programa la codigo." (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("programa al codigo.") OR ("programacion a codigo."))) OR ("programacion paralelel codigo."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"programa al codigo.\") OR (\"programacion a codigo.\"))) OR (\"programacion paralelel codigo.\"))".
• Removing quotes may allow a broader search: (((( programa al codigo. ) OR ( programacion a codigo. ))) OR ( programacion paralelel codigo. )).
• Adding a wildcard symbol may retrieve word variants: (((("programa al codigo.") OR ("programacion a codigo."))) OR ("programacion paralelel codigo."))*.