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
tong cong » trong cong, cong cong, dung cong
van thanh » ban thanh, van tuan
thanh lap » thanh san, phan lap, thanh hai
dong son » dong von, dong san, hoang son

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 ((dong son) or (tong cong)) van thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh tranh cua ((dong son) OR (tong cong)) van thanh lap.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh tranh cua ((dong son) or (tong cong)) van thanh lap*.