Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tinh » thanh binh, nhanh tinh, than kinh
nhung cong » thong cong, hang cong, nhung don
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
van toan » van tuan, van tan, van thanh
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: ho chiet tach - thanh tinh chat ((nhung cong) or (dung cong)) van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh tinh chat ((nhung cong) OR (dung cong)) van toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh tinh chat ((nhung cong) or (dung cong)) van toan tap*.