private function getSomePhieuMuon($txtLoaiUser = null, $txtTK = null)
 {
     //Gọi hàm setOnlinePhieuMuon() - setPhieuTreHen()
     $this->setOnlinePhieuMuon();
     $this->setPhieuTreHen();
     //--------------------------.
     $dsPhieuMuon = null;
     if ($txtLoaiUser != null && $txtTK == null) {
         $dsPhieuMuon = PhieuMuonSach::join('nguoi_dung', function ($join) {
             $join->on('phieu_muon_sach.id_nguoi_muon', '=', 'nguoi_dung.id');
         })->select('nguoi_dung.id', 'phieu_muon_sach.ma_so_phieu', 'phieu_muon_sach.thoi_gian_lap', 'phieu_muon_sach.thoi_gian_xu_ly', 'phieu_muon_sach.trang_thai_phieu', 'nguoi_dung.ma_so_the', 'phieu_muon_sach.id_nguoi_xu_ly', 'phieu_muon_sach.id')->where('phieu_muon_sach.trang_thai_phieu', $txtLoaiUser)->orderBy('phieu_muon_sach.trang_thai_phieu', 'asc');
     } else {
         if ($txtLoaiUser == null && $txtTK != null) {
             $dsPhieuMuon = PhieuMuonSach::join('nguoi_dung', function ($join) {
                 $join->on('phieu_muon_sach.id_nguoi_muon', '=', 'nguoi_dung.id');
             })->select('nguoi_dung.id', 'phieu_muon_sach.ma_so_phieu', 'phieu_muon_sach.thoi_gian_lap', 'phieu_muon_sach.thoi_gian_xu_ly', 'phieu_muon_sach.trang_thai_phieu', 'nguoi_dung.ma_so_the', 'phieu_muon_sach.id_nguoi_xu_ly', 'phieu_muon_sach.id')->where('nguoi_dung.ma_so_the', $txtTK)->orderBy('phieu_muon_sach.trang_thai_phieu', 'asc');
         } else {
             if ($txtLoaiUser != null && $txtTK != null) {
                 $dsPhieuMuon = PhieuMuonSach::join('nguoi_dung', function ($join) {
                     $join->on('phieu_muon_sach.id_nguoi_muon', '=', 'nguoi_dung.id');
                 })->select('nguoi_dung.id', 'phieu_muon_sach.ma_so_phieu', 'phieu_muon_sach.thoi_gian_lap', 'phieu_muon_sach.thoi_gian_xu_ly', 'phieu_muon_sach.trang_thai_phieu', 'nguoi_dung.ma_so_the', 'phieu_muon_sach.id_nguoi_xu_ly', 'phieu_muon_sach.id')->where('phieu_muon_sach.trang_thai_phieu', $txtLoaiUser, 'and')->where('nguoi_dung.ma_so_the', $txtTK)->orderBy('phieu_muon_sach.trang_thai_phieu', 'asc');
             } else {
                 $dsPhieuMuon = $this->getAllPhieuMuon();
             }
         }
     }
     return $dsPhieuMuon;
 }