Several comma-separated tags will be considered as logical AND between them. You can also use semicolon for logical OR. AND has a priority over OR and you cannot use parentheses for logical grouping. Asterisk (*) within a tag will be regarded as a mask for "any string".

Found in forums

> TDM08: Cops & Crooks v0.2
    FORUMS / Arma 3 / Missions WIP   ||  Tags: Arma3, Cops, Scenario, Tdm
> Police Lights & Siren
    FORUMS / Editing / Scripting / Arma 3   ||  Tags: Cops, Light, Lights, Police, Siren