Perhaps you should try some spelling variations:
"tu bach dan loi giai dong phuong tien" » "tu bach dan loi giai dong phuong trinh", "tu bach dan loi giai duong phuong tien", "tu bach dan loi giai dung phuong tien", "tu bach dan loi giai dong huong tien", "tu bach dan loi gia dong phuong tien", "tu bach dan loi gian dong phuong tien", "tu bach dan loi gioi dong phuong tien", "tu bach dang loi giai dong phuong tien", "tu bac dan loi giai dong phuong tien", "tu bach van loi giai dong phuong tien", "tu bach dan so giai dong phuong tien", "tu bach dan hoc giai dong phuong tien", "tu bach dan bai giai dong phuong tien", "vu bach dan loi giai dong phuong tien", "tu cach dan loi giai dong phuong tien", "tu bach dan loai giai dong phuong tien"
"te sach ba me gioi co thong tin" » "te sach ba me gioi bo thong tin", "te sach ba me gioi co trong tin", "te sach ba me gioi co phong tin", "toc sach ba me gioi co thong tin", "te sach bai me gioi co thong tin", "te sach bac me gioi co thong tin", "te sach bao me gioi co thong tin", "te sach ba me giai co thong tin", "te sach ba ve gioi co thong tin", "te sach ba me nguoi co thong tin", "te sach ba me gioi co thong tinh"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("tu bach dan loi giai dong phuong tien") or ("te sach ba me gioi co thong tin"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("tu bach dan loi giai dong phuong tien") OR ("te sach ba me gioi co thong tin")).
• Removing quotes may allow a broader search: (( tu bach dan loi giai dong phuong tien ) or ( te sach ba me gioi co thong tin )).
• Adding a wildcard symbol may retrieve word variants: (("tu bach dan loi giai dong phuong tien") or ("te sach ba me gioi co thong tin"))*.