Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thu sach)) ky ((nang ma) OR (tang ma)) hoi. hieu ve cac xuc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) ky ((nang ma) OR (tang ma)) hoi. hieu ve cac xuc va hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thu sach)) ky ((nang ma) OR (tang ma)) hoi. hieu ve cac xuc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) ky ((nang ma) OR (tang ma)) hoi. hieu ve cac xuc va hanh vai cua tre*.