Perhaps you should try some spelling variations:
"boletin del institution car y cuervo" » "boletin c institution car y cuervo" (Expand Search), "boletin del institution _ y cuervo" (Expand Search), "boletin del institutions c y cuervo" (Expand Search), "bulletin del institution car y cuervo" (Expand Search)
"boletin del instituto car y cuervo" » "bulletin del instituto car y cuervo" (Expand Search), "boletin del institute car y cuervo" (Expand Search), "boletin del institutes car y cuervo" (Expand Search), "boletin del institutions car y cuervo" (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: (("boletin del instituto car y cuervo") OR ("boletin del institution car y cuervo"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"boletin del instituto car y cuervo\") OR (\"boletin del institution car y cuervo\"))".
• Removing quotes may allow a broader search: (( boletin del instituto car y cuervo ) OR ( boletin del institution car y cuervo )).
• Adding a wildcard symbol may retrieve word variants: (("boletin del instituto car y cuervo") OR ("boletin del institution car y cuervo"))*.