Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dung cong
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong san, cong thanh
phan dau » hang dau

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 - canh tranh cua tong cong tan ((phan tu) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - canh tranh cua tong cong tan ((phan tu) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - canh tranh cua tong cong tan ((phan tu) or (phan dau))*.