Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
cuu thuong » cuu phuong, cua thuong, cuu tuong
hanh cong » thanh cong, hang cong, hanh dong
cu thuong » cua thuong, tu thuong, vu thuong
con thanh » cong thanh, son thanh, co thanh
san ban » sang ban, van ban, can ban

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 cong ((cu thuong) or (cuu thuong)) con thanh san ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh cong ((cu thuong) OR (cuu thuong)) con thanh san ban*.