Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
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: ho ((dieu hanh) or (chiet tach)) - hanh trinh cua nhung cong ((dan toan) OR (manh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((dieu hanh) OR (chiet tach)) - hanh trinh cua nhung cong ((dan toan) OR (manh toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((dieu hanh) or (chiet tach)) - hanh trinh cua nhung cong ((dan toan) OR (manh toan)) ban".
• Adding a wildcard symbol may retrieve word variants: ho ((dieu hanh) or (chiet tach)) - hanh trinh cua nhung cong ((dan toan) OR (manh toan)) ban*.