Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
tieu sach » chieu sach, dien sach, te sach
luan hang » luan nang, luan han, luan hung
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - hanh trinh luan hang ((cong tan) OR (cong tac)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - hanh trinh luan hang ((cong tan) OR (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh trinh luan hang ((cong tan) OR (cong tac)) toan cao*.