Perhaps you should try some spelling variations:
ban danh » ban doanh, ban hanh, ban dan
danh hoi » danh hoa, dan hoi, danh hoc
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty xanh » ty xang, ty anh, ky xanh
cac duc » cac du, cao duc, cac nuoc
cac dac » cac dan, cac dai, cac bac
hoi cua » hoi chuc
a phoi » cap phoi, cay phoi, gap phoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty xanh a phoi. lieu va ((cac duc) or (cac dac)) ban danh hoi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xanh a phoi. lieu va ((cac duc) OR (cac dac)) ban danh hoi cua viet*.