Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
cam tuc » cam xuc, cam tu, nam thuc
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thuoc sach)) ((ky lang) OR (ky tang)) xa hoi. lieu va cam tuc va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thuoc sach)) ((ky lang) OR (ky tang)) xa hoi. lieu va cam tuc va thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (thuoc sach)) ((ky lang) OR (ky tang)) xa hoi. lieu va cam tuc va thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thuoc sach)) ((ky lang) OR (ky tang)) xa hoi. lieu va cam tuc va thanh vi cua tre*.