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 chuc » tranh chua, tranh cua, trang phuc
nang cong » nang song, dang cong, bang cong
cong tan » cong tac, cong san, cong thanh
toan tai » doanh tai, toan cao, von tai
toan ban » van 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 chieu sach - hanh tranh chuc nang cong tan ((((toan tai) or (toan ban))) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh tranh chuc nang cong tan ((((toan tai) OR (toan ban))) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh tranh chuc nang cong tan ((((toan tai) or (toan ban))) or (toan tap))*.