Perhaps you should try some spelling variations:
nhung dung » phuong dung, ung dung, thong dung
viet sach » viet anh, dien sach, viet tech
trung cua » truong cua, trung tuan, trung cap
tran tuan » tran xuan, tran quang, tran thanh
dung manh » duong manh, dung danh, hung manh
dai viet » mai viet, dao viet, tai viet
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: dai viet sach - hanh ((trung cua) or (tran tuan)) nhung dung manh ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dai viet sach - hanh ((trung cua) OR (tran tuan)) nhung dung manh ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: dai viet sach - hanh ((trung cua) or (tran tuan)) nhung dung manh ((toan tap) or (toan ban))*.