From the properties, industrial buildings, and warehouses for rent section, or at the URL https://gtizaragoza.es/alquiler-naves-industriales-zaragoza, if you search, for example, using three of the published references: 504321, 506116, and 504071, the search engine correctly constructs the query. I've added an echo query, but the results are incorrect. Screenshot attached.

[https://postimg.cc/MnPXKsrP]