Perhaps you should try some spelling variations:
trung thanh » truong thanh
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung tam, tran tuan, truong thanh
phan cong » thanh cong
hach toan » thanh toan, manh toan
pham toan » pham tuan, pham tan, phap toan

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 chieu xanh - hanh ((trung tuan) OR (trung thanh)) phan cong ((hach toan) OR (pham toan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh ((trung tuan) OR (trung thanh)) phan cong ((hach toan) or (pham toan)) tap~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh ((trung tuan) OR (trung thanh)) phan cong ((hach toan) or (pham toan)) tap*.