Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cham so » cham soc, cham o, ham so
lo nang » ho nang, loai nang, cao nang
vai cua » dai cua, hai cua, lai cua
ly nang » ky nang, ly hang, ly vang
hieu ve » hieu va
so ban » sao ban, so bang, co ban
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((lo nang) OR (ly nang)) x hoi. ((hieu ve) OR (hieu van)) cham so ban thanh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((lo nang) or (ly nang)) x hoi. ((hieu ve) OR (hieu van)) cham so ban thanh vai cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ((lo nang) or (ly nang)) x hoi. ((hieu ve) OR (hieu van)) cham so ban thanh vai cua te*.