Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
hoc chiet » hoc thiet, hoc nhiet, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
cong cong » cong dong, trong cong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, dan than, xuan toan

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 cong cong ((dan toan) or (manh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh trinh cua cong cong ((dan toan) OR (manh toan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh trinh cua cong cong ((dan toan) or (manh toan)) ban*.