Perhaps you should try some spelling variations:
series estudios » serie estudios, seis estudios, tres estudios
estudios urbano » estudios peruanos, estudios hispano, d'estudis urbans
estudio urbano » espacio urbano
dos estudios » los estudios
eees estudio » leyes estudio, redes estudio, leyes estudios

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

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