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