Hello,
If I execute this in bcftools 1.10.2

clinvar.vcf.gz is https://ftp.ncbi.nlm.nih.gov/pub/clinvar/vcf_GRCh37/clinvar.vcf.gz

<pre>bcftools query -i "CLNREVSTAT='criteria_provided,_conflicting_interpretations'"  -f '%CLNREVSTAT\n' clinvar.vcf.gz | sort -u</pre>

I get this results:

<pre>
criteria_provided,_conflicting_interpretations
criteria_provided,_multiple_submitters,_no_conflicts
criteria_provided,_single_submitter
</pre>

I was expecting to get only criteria_provided,_conflicting_interpretations. Is there anything that I don't understand.

Many thanks 
I supect  it's invoked as an OR operator. Can you please try 

    "CLNREVSTAT='criteria_provided' &&  CLNREVSTAT='_conflicting_interpretations' " 

