Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh hang » thanh hang, hang hang, hanh han
thanh lap » thanh san, phan lap, thanh hai
va duong » van duong, va tuong, va dong
va huong » va thuong, va phuong, va tuong
cong san » cong tac
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh hang ((va duong) or (va huong)) cong san ((thanh lap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh hang ((va duong) OR (va huong)) cong san ((thanh lap) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh hang ((va duong) or (va huong)) cong san ((thanh lap) or (khan cap))*.