Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
dap nhung » vap nhung, va nhung, dap ung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh trung ((dap nhung) or (cam nang)) cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung ((dap nhung) OR (cam nang)) cong tac toan tap*.