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
chua bang » chu bang, chua nang, chua xang
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
chuc » thuc, chu, phuc

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 ((chua bang) or (chuc nang)) cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh tranh ((chua bang) OR (chuc nang)) cong dan than cau*.