Perhaps you should try some spelling variations:
series estudio » series estudios, serie estudio, serie estudios
estudio urbano » estudios urbano, estudios urbanos
versus espacio » versus estado, versus ignacio
espacio urbano » espacio urbanismo
desafio cubano » desafio susana, desafio ciudadano

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

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