Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
dong cong » duong cong, dung cong, dang cong
doc hieu » hoc thieu, hoc hien
cua dong » chua dong, cua cong, cua dang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
doi chi » doi khi

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: ((((doi chi) OR (doc hieu))) OR (toc thieu)) tinh - hanh trung cua dong cong tac toan cao~.
• Adding a wildcard symbol may retrieve word variants: ((((doi chi) or (doc hieu))) or (toc thieu)) tinh - hanh trung cua dong cong tac toan cao*.