Perhaps you should try some spelling variations:
series estudios » serie estudios, tres estudios, leyes estudios
estudios urbano » estudio urbano, estudios peruanos, estudios hispano
series espacio » series spain, versus espacio, sociales espacio
espacio urbano » espacio urbanismo
seis estudios » los estudios, dos estudios, dios estudios

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( seis estudios urbano. ) or ( series espacio urbano. ))) or ( series estudios urbanos. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( seis estudios urbano. ) OR ( series espacio urbano. ))) OR ( series estudios urbanos. )).
• Adding a wildcard symbol may retrieve word variants: (((( seis estudios urbano. ) or ( series espacio urbano. ))) or ( series estudios urbanos. ))*.