Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, ho chieu
hanh mang » nhanh mang, hanh trang, nhanh lang
vua nhung » va nhung, cua nhung, qua nhung
mang vua » mang cua, mang va, hang va
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo tieu) or (doi chieu)) sach - hanh mang vua nhung ((cong tan) or (cong tac)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (doi chieu)) sach - hanh mang vua nhung ((cong tan) OR (cong tac)) toan tap.
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (doi chieu)) sach - hanh mang vua nhung ((cong tan) or (cong tac)) toan tap*.