Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh phan » thanh phan, anh phan, hanh han
cong cap » cung cap, cong cau, cong cac
cap phan » cac phan, cao phan, cap han
cong tan » cong tac, cong san, cong thanh
tan hanh » tan thanh, tang hanh, toan hanh
hieu ca » hieu cac, hieu cua, hieu va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu ca) OR (chieu sach)) - thanh cong cap phan cong tan hanh phan~.
• Adding a wildcard symbol may retrieve word variants: toc ((hieu ca) or (chieu sach)) - thanh cong cap phan cong tan hanh phan*.