Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
dang trong » dung trong, dong trong, lang trong
hieu quan » hieu qua, lieu quan, thien quan
trong tac » trong cac, tuong tac, trong tan
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
quan cao » quang cao, quan cau, quan ao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (hieu quan)) - thanh tung cua dang trong tac quan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu quan)) - thanh tung cua dang trong tac quan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu quan)) - thanh tung cua dang trong tac quan cao*.