Perhaps you should try some spelling variations:
khuong tinh » chuong trinh, phuong trinh, phuong binh
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
huong tinh » thuong tinh, duong tinh, hung tinh
hanh ban » thanh ban, hang ban, hanh san
cua hang » cua dang, cua nhung, cua cong
toan cao » toan ban
toan tap » toan ban
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh ban cua hang ((huong tinh) or (khuong tinh)) ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ban cua hang ((huong tinh) OR (khuong tinh)) ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ban cua hang ((huong tinh) or (khuong tinh)) ((toan cao) or (toan tap))*.