</td>
                    </tr>
                    <tr>
                        <td>Thông tin GVHD: </td>
                        <td><?php 
    $gvhd = LuanVan::getGVHD($chi_tiet_dau_sach[0]->id_luan_van);
    foreach ($gvhd as $gv) {
        echo $gv->ten_gvhd . "<br/>";
    }
    ?>
</td>
                    </tr>
                    <tr>
                        <td>Thông tin SVTH: </td>
                        <td><?php 
    $svth = LuanVan::getSVTH($chi_tiet_dau_sach[0]->id_luan_van);
    foreach ($svth as $sv) {
        echo $sv->mssv . " - " . $sv->ho_ten_sv . "<br/>";
    }
    ?>
 </td>
                    </tr>
                    <tr>
                        <td>Năm thực hiện:</td>
                        <td><?php 
    echo $chi_tiet_dau_sach[0]->nam_thuc_hien;
    ?>
<br/>
                            <?php 
}
?>
 public static function getNamTHLV()
 {
     return LuanVan::select('nam_thuc_hien')->distinct()->orderBy('nam_thuc_hien')->get();
 }