Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dang thai » dang thi, dang hai, dang khai
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
nuoc van » nuoc va, nuoc san, luoc van
van dang » van dong, van dung, van nang
thai cua » than cua, tai cuc, tri cua
sach ky » sac ky, sach y, sach ty
thi lan » thi hanh, thi nang, thi lien
lan cac » dan cac, lan dac, gian cac
cua tre » cua te, cuu tre, cua triet

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 ky nang ((xa hoi) or (x ho)). thi lan cac nuoc van dang thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang ((xa hoi) OR (x ho)). thi lan cac nuoc van dang thai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang ((xa hoi) or (x ho)). thi lan cac nuoc van dang thai cua tre*.