Perhaps you should try some spelling variations:
chiet tach » chieu sach
luan chung » luan chinh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
ho chiet » ho chieu, ho thiet, hoc thiet
cong tan » cong tac, cong san, cong thanh
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 tang luan chung ((huong dan) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh tang luan chung ((huong dan) OR (cong tan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh tang luan chung ((huong dan) or (cong tan)) toan cau*.