Get list of genes associated with at least one of the input GO ID list?

[biocyberman]

I have these GO IDs:
GO:1904597 GO:1904596 GO:1904598 GO:0005260 GO:0042999 GO:0043004 GO:0043003 GO:0043000 GO:0043002 GO:0034662 GO:0002248 (implicit or).

When I post this list into the Free-text filer textarea of Genes and gene products search , I did not get the output list as I would expect: The list of genes that are associated with at least one of the GOs.

What more confusing, the more terms I put in the less gene I get. So it seems to imply and query.

[kltm]

That is correct: in the main interface it is an "and".
While we do not have that in the main production interface, you can see a "beta" interface for doing searches like yours here:
geneontology/amigo#69 (comment)