Perhaps you should try some spelling variations:
trung thanh » truong thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » tran tuan, truong thanh
duong cong » dung cong, luong cong, duong trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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: ho chieu xanh - thanh ((((trung tuan) OR (trung thanh))) OR (trung tam)) duong cong tac toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh ((((trung tuan) OR (trung thanh))) or (trung tam)) duong cong tac toan cao~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh ((((trung tuan) OR (trung thanh))) or (trung tam)) duong cong tac toan cao*.