Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
qua nhung » quan nhung, cua nhung, chua nhung
qua chung » qua chuong, quat chung, cua chung
ho chiet » ho chieu, ho thiet, hoc thiet
cong ban » cong bang, cong san, cong tan
than cau » phan cau, than cap, thanh chau
toan cau » 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: ho chiet tach - hanh trinh ((qua nhung) or (qua chung)) cong ban ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh trinh ((qua nhung) OR (qua chung)) cong ban ((than cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh trinh ((qua nhung) or (qua chung)) cong ban ((than cau) or (toan cau))*.