Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tung » thanh cong
sang thanh » dang thanh, sang than, tang thanh
nhung don » nhung van, nhung bo
tong cong » trong cong, cong cong, dung cong
thanh lap » thanh san, phan lap, thanh hai
ho chiet » ho chieu, ho thiet, hoc thiet
tung va » trung va, tuong va, dung va

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 tung va ((nhung don) or (tong cong)) sang thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh tung va ((nhung don) OR (tong cong)) sang thanh lap.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh tung va ((nhung don) or (tong cong)) sang thanh lap*.