Perhaps you should try some spelling variations:
trung thanh » truong thanh
trung tuan » trung tam, tran tuan, truong thanh
dang cong » dung cong
chi xanh » chi anh, chi danh, chi hanh
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 xanh - manh ((trung tuan) OR (trung thanh)) dang cong tac toan cao~.
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - manh ((trung tuan) or (trung thanh)) dang cong tac toan cao*.