Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
tieu hanh » dieu hanh, tiem hanh, tien hanh
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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: theo tieu hanh - hanh trung cua dung cong tan ((toan tai) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: theo tieu hanh - hanh trung cua dung cong tan ((toan tai) or (toan ban))*.