Perhaps you should try some spelling variations:
"programacion paraleldel codigo." » "programacion paralela codigo." (Expand Search)
"programacion al codigo." » "programacion del codigo." (Expand Search), "programacion de codigo." (Expand Search), "programacion en codigo." (Expand Search)
"programas a codigo." » "programas y codigo." (Expand Search), "programas de codigo." (Expand Search), "programa la codigo." (Expand Search), "programas el 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: (((("programacion paraleldel codigo.") OR ("programas a codigo."))) OR ("programacion al codigo."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"programacion paraleldel codigo.\") OR (\"programas a codigo.\"))) OR (\"programacion al codigo.\"))".
• Removing quotes may allow a broader search: (((( programacion paraleldel codigo. ) OR ( programas a codigo. ))) OR ( programacion al codigo. )).
• Adding a wildcard symbol may retrieve word variants: (((("programacion paraleldel codigo.") OR ("programas a codigo."))) OR ("programacion al codigo."))*.