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