Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
manh thanh » danh thanh, minh thanh, manh thang
thanh vai » thanh hai, thanh van, thanh tai
dua tren » dung tren
duc manh » suc manh, duc anh, duc minh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
bao duc » dao duc, bao luc, cao duc
ve bao » te bao, va bao
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: ((tu sach) OR (thuoc sach)) ky nang x hoi. hieu ve bao duc manh thanh vai ((dua tren) OR (cua te))~.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) ky nang x hoi. hieu ve bao duc manh thanh vai ((dua tren) or (cua te))*.