Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
sang tai » hang tai, sang tao, tang tai
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
ky sang » ky nang, ky dang, ky tang
tai hai » thi hai, dai hai, tai ha
vien va » dien va, vien da, tien va
xa hanh » xa thanh, xa khanh, va hanh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
va tuc » va thuc, va tu, va tac

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 sang tai hai. hieu vien va tuc xa hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) ky sang tai hai. hieu vien va tuc xa hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) ky sang tai hai. hieu vien va tuc xa hanh vai cua tre*.