Perhaps you should try some spelling variations:
estudio urbano » estudios urbano, estudios urbanos, espacio urbano
guias urbanos » parias urbanos, ruinas urbanas, buses urbanos
serie estudio » serie estudios, series estudios, serie studia
serie studies » serie estudios, serie studia, series estudios
studies spain » estudies spain, students spain, soldiers spain

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

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