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