Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tung » thanh cong
bang cong » dang cong, bang song, hang cong
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
tung cao » nung cao, truong cao, trung cap
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap

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 cao ((bang cong) or (dung cong)) dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh tung cao ((bang cong) OR (dung cong)) dan phan cac.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh tung cao ((bang cong) or (dung cong)) dan phan cac*.