Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thien van » thi van
hanh vai » hanh vi, hanh va, hanh tai
thu sach » tu sach, thuat sach, thu hoach
su sach » so sach, vu sach
ba truc » cau truc, ba trung, dai truc
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
van ba » van ban, van bao, van bac
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: ((((thu sach) OR (thuoc sach))) or (su sach)) ky nang x hoi. thien van ba truc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((thu sach) OR (thuoc sach))) OR (su sach)) ky nang x hoi. thien van ba truc va hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((thu sach) OR (thuoc sach))) or (su sach)) ky nang x hoi. thien van ba truc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((thu sach) OR (thuoc sach))) or (su sach)) ky nang x hoi. thien van ba truc va hanh vai cua tre*.