use warnings;
use strict;
use Mojo::DOM;

my $html = <<'END_HTML';
<span class="Trsdu(0.3s) Fw(b) Fz(36px) Mb(-4px) D(ib)" data-reactid="33">a</span>
<span class="D(ix) Mb(-4px) Fz(36px) Fw(b) Trsdu(0.3s)" data-reactid="34">b</span>
<span class="Mb(-4px) Fz(36px) D(ib) Fw(b) Trsdu(0.3s)" data-reactid="35">c</span>
END_HTML

my $dom = Mojo::DOM->new($html);
my $spans = $dom->find('span[class~="D(ib)"]')->each(
	sub { print "==> $_ <==\n" } );

__END__

==> <span class="Trsdu(0.3s) Fw(b) Fz(36px) Mb(-4px) D(ib)" data-reactid="33">a</span> <==
==> <span class="Mb(-4px) Fz(36px) D(ib) Fw(b) Trsdu(0.3s)" data-reactid="35">c</span> <==