Perhaps you should try some spelling variations:
"programadas a codigo." » "programas y codigo." (Expand Search), "programado y codigo." (Expand Search), "programadas al codigo." (Expand Search), "programadas el codigo." (Expand Search), "programaadas a codigo." (Expand Search), "programasadas a codigo." (Expand Search)
"programadaaaar plc codigo." » "programadaaaar al codigo." (Expand Search), "programadaaaar el codigo." (Expand Search), "programaadaaaar plc codigo." (Expand Search), "programasadaaaar plc codigo." (Expand Search)
"program _ codigo." » "programa _ codigo." (Expand Search), "programas _ 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: (((("program _ codigo.") OR ("programadas a codigo."))) OR ("programadaaaar plc codigo."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"program _ codigo.\") OR (\"programadas a codigo.\"))) OR (\"programadaaaar plc codigo.\"))".
• Removing quotes may allow a broader search: (((( program _ codigo. ) OR ( programadas a codigo. ))) OR ( programadaaaar plc codigo. )).
• Adding a wildcard symbol may retrieve word variants: (((("program _ codigo.") OR ("programadas a codigo."))) OR ("programadaaaar plc codigo."))*.