Perhaps you should try some spelling variations:
"dos studies hispanic." » "dos estudios hispanicos.", "dos estudios hispano.", "dos studies spain.", "dos estudios hispanic.", "case studies hispanic."
"serie estudos urbans." » "serie estudios urbanos.", "serie estudios urbano.", "serie d'estudis urbans.", "serie estudios urbans.", "series estudios urbans.", "serie estado urbans."
"serie estudio urbano." » "serie estudios urbano.", "serie estudios urbanos.", "serie espacio urbano.", "series estudios urbano.", "serie studia urbano."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("serie estudos urbans.") or ("serie estudio urbano."))) or ("dos studies hispanic."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie estudos urbans.") OR ("serie estudio urbano."))) OR ("dos studies hispanic."))*.
• Removing quotes may allow a broader search: (((( serie estudos urbans. ) or ( serie estudio urbano. ))) or ( dos studies hispanic. ))*.