Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo chau » theo chieu, theo phap, theo cap
trung cap » truong cao, trung tam
tran tuan » tran xuan, tran quang, tran thanh
theo chu » theo chieu, cho chu, chao chu
cong tac » cong ty
tac van » tac vang, cac van, tac 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: ((theo chau) OR (theo chu)) tinh - hanh ((trung cap) OR (tran tuan)) nhung cong tac van ban~.
• Adding a wildcard symbol may retrieve word variants: ((theo chau) or (theo chu)) tinh - hanh ((trung cap) or (tran tuan)) nhung cong tac van ban*.