Perhaps you should try some spelling variations:
thanh tung » thanh cong
phuong dan » phuong danh, phuong doan, phuong lan
kien sach » dien sach, vien bach, kien mac
dap nhung » vap nhung, va nhung, dap ung
hoc kien » hoc hien, hoc vien, hoa kien
tung dap » tung dan, trung dai, tuong dan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc kien sach - thanh tung dap nhung ((phuong dan) or (huong dan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc kien sach - thanh tung dap nhung ((phuong dan) OR (huong dan)) than cau*.