Perhaps you should try some spelling variations:
"serie estudios espanoles." » "serie estudios espaciales.", "serie judios espanoles.", "serie estudiantes espanoles."
"los estudios urbano." » "los estudios urbanos.", "los estudio urbano.", "los estudios peruanos."
"strikes spain durango." » "strike spain durango.", "shrines spain durango.", "series spain durango.", "strikes spain during.", "strikes espana durango."

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: (((("strikes spain durango.") or ("serie estudios espanoles."))) or ("los estudios urbano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("strikes spain durango.") OR ("serie estudios espanoles."))) OR ("los estudios urbano.")).
• Removing quotes may allow a broader search: (((( strikes spain durango. ) or ( serie estudios espanoles. ))) or ( los estudios urbano. )).
• Adding a wildcard symbol may retrieve word variants: (((("strikes spain durango.") or ("serie estudios espanoles."))) or ("los estudios urbano."))*.