Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
thue nang » thien nang, thuat nang, thi nang
hanh vai » hanh va, hanh tai, hanh van
hoc sach » hoc sinh, hoc cac, hoc anh
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
luc va » duc va, tuc va, loc va
va cam » va cham, va cac, va cao
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) OR (hoc sach)) thue nang x hoi. hieu va cam luc va ((hanh vai) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) thue nang x hoi. hieu va cam luc va ((hanh vai) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) thue nang x hoi. hieu va cam luc va ((hanh vai) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) thue nang x hoi. hieu va cam luc va ((hanh vai) or (hanh vi)) cua tre*.