Perhaps you should try some spelling variations:
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tinh thi » trinh thi, tinh thai, dinh thi
thi nang » thi cong, ki nang, thi hanh
cong dan » cong san, cong tan, huong dan
toan ban » van 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 chiet tach - hanh tinh thi nang ((cong trinh) or (cong dan)) ((toan ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chiet tach - hanh tinh thi nang ((cong trinh) OR (cong dan)) ((toan ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - hanh tinh thi nang ((cong trinh) or (cong dan)) ((toan ban) or (toan tap))*.