Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dang thai » dang thi, dang hai, dang khai
bac nuoc » cac nuoc, bach tuoc, sach nuoc
thai cua » than cua, tai cuc, tri cua
thi van » thi hanh, thi nang
thi lan » thi hanh, thi nang, thi lien
va dang » van dang, va nang, va lang
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y nang x hoi. ((thi van) or (thi lan)) bac nuoc va dang thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang x hoi. ((thi van) OR (thi lan)) bac nuoc va dang thai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang x hoi. ((thi van) or (thi lan)) bac nuoc va dang thai cua tre*.