(I’m looking for the complete Cold Case series in Spanish — Latin or Castilian Spanish — including all seasons.)
Cold Case is often searched as "Cold Case: Archivo criminal" in Spanish-speaking countries. If you want to be more precise: cold case serie completa en espanol
(Where can I find the complete series of Cold Case in Spanish?) (I’m looking for the complete Cold Case series
Or, if you want a more generic statement for a search engine or forum: here’s a suggestion:
If you’re looking for a way to phrase this naturally in Spanish while requesting the complete series of Cold Case , here’s a suggestion: