Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sach » chieu sach, thien hach, hieu cach
chiet tach » chieu sach
trong minh » truong minh, trong kinh, thong minh
trung cua » truong cua, trung tuan, trung cap
cua dung » cua dang, cua dong, qua dung
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 ((thieu sach) or (chiet tach)) - thanh trung cua dung trong minh ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chiet tach)) - thanh trung cua dung trong minh ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (chiet tach)) - thanh trung cua dung trong minh ((toan tap) or (toan ban))*.