Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
tong cuong » tang cuong, tong cong, hong cuong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
cua tong » cua cong, cua dong, cua nong
tap quan » tac quan, hai quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - hanh trinh cua tong cuong ((tap doan) or (tap quan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh trinh cua tong cuong ((tap doan) OR (tap quan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh trinh cua tong cuong ((tap doan) or (tap quan)) ban*.