ajuda no regex search

$('#searchPacientes').keyup(function(){
        var searchField = $('#searchPacientes').val();
        var regex = new RegExp(searchField, "i");
        var output = '<div class="row">';
        var count = 1;
        $.getJSON('../Paciente/getAllPacientes', function(data) {
          //var listaPacientes = JSON.stringify(data);
          $.each(data, function(key, val){
            if ((val.usuario.nome.search(regex) != -1) || (val.usuario.user.search(regex) != -1) || (val.usuario.celular.search(regex) != -1) || (val.rg.search(regex) != -1) || (val.cpf.search(regex) != -1)) {
              output += '<div class="col-md-6 well">';
              output += '<div class="col-md-3"><img class="img-responsive" src="'+val.photo+'" alt="'+ val.usuario.nome +'" /></div>';
              output += '<div class="col-md-7">';
              output += '<h5>' + val.usuario.nome + '</h5>';
              output += '<p>' + val.rg + '</p>'
              output += '<p>' + val.cpf + '</p>'
              //output += '<p>' + val.usuario.usuarioconvenio.numero + '</p>'
              output += '<p>' + val.usuario.celular + '</p>'
              output += '</div>';
              output += '</div>';
              if(count%2 == 0){
                output += '</div><div class="row">'
              }
              count++;
            }
          });