Perhaps you should try some spelling variations:
"serie estudios hispanos." » "serie estudios hispano.", "serie estudios hispanicos.", "serie estudios espanoles."
"los estudios urbano." » "los estudios urbanos.", "los estudio urbano.", "los estudios peruanos."
"artes espana durango." » "artes espana durante.", "artes espana franco.", "artes spain durango.", "arte espana durango.", "arte espanol durango."

You may be able to get more results by adjusting your search query.

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