Perhaps you should try some spelling variations:
nhung xuong » nhung huong, nhung tuong, nhung phuong
thanh trung » thanh tung
chieu sach » chieu sang, chieu xanh, hieu cach
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
xuong dan » huong dan, xuong san, tuong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((chieu sach) or (chinh sach))) or (chiet tach)) - thanh trung cua nhung xuong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sach) OR (chinh sach))) OR (chiet tach)) - thanh trung cua nhung xuong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sach) or (chinh sach))) or (chiet tach)) - thanh trung cua nhung xuong dan toan ban*.