So the reason why

query_by=title

produces results but not

query_by=externalReference,contractingPartyName,title...

is because the

externalReference

field has a

es

locale and Typesense uses the locale of the first field in the

query_by

list to tokenize the query string. Because of the

es

locale

góndola

is not normalized to

gondola

while the text inside title will be indexed in the normalized form. Because of this, a match is not produced. You can change the order of fields to make

title

start first and it will work.