It would be great if we could also possibility to have complex filters which are combined via OrCondition and also have there again nested AndCondition inside.

The condition signature could looke like this:

class OrCondition {
    public readonly array $conditions;
    
    public function __construct(...$conditions)
    {
        $this->conditions = $conditions;
    }
}

class AndCondition {
    public readonly array $conditions;
    
    public function __construct(...$conditions)
    {
        $this->conditions = $conditions;
    }
}

The queries in the specific ...Searcher classes will get more complex. We would require to add some Recursive functionality and before implement such feature we require a research if this can even be achieved by all currently supported search engines.