Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
duong cong » dung cong, luong cong, duong trong
hai duong » dai cuong, hai phong
ho chieu » theo chieu, hoc thieu, doi chieu
tung hai » trung hai, dung hai, hung hai
cong tac » cong ty
tren cau » tren ca, tren cay, trinh cau
tren tau » tren thuc, tren may, tren dat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh tung hai duong cong tac ((tren cau) or (tren tau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh tung hai duong cong tac ((tren cau) OR (tren tau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung hai duong cong tac ((tren cau) or (tren tau))*.