Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doan dieu » nhan dieu, dang dieu, toan dien
cong tap » cuong tap, cong tac, tong tap
cong tan » cong tac, cong san, cong thanh

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

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