Perhaps you should try some spelling variations:
ban danh » ban doanh, ban hanh, ban dan
te sach » toc sach
danh le » dinh le, manh le, anh le
cuc ban » cua ban, cac ban, cuu ban
cac cuc » cac cuoc, cac cua, cac nuoc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
le cua » ly cua
5 hoi » o hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach v nang ((5 hoi) or (xa hoi)). ((hieu ve) or (hieu va)) cac cuc ban danh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang ((5 hoi) OR (xa hoi)). ((hieu ve) OR (hieu va)) cac cuc ban danh le cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach v nang ((5 hoi) or (xa hoi)). ((hieu ve) or (hieu va)) cac cuc ban danh le cua tre*.