Perhaps you should try some spelling variations:
sach tham » sach nha
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
mang xa » lang xa, mang may, dang xay
nang xa » nang x, lang xa, ang xa
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach tham ((((nang xa) or (mang xa))) or (nang ma)) hoi. hieu va cam tuc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tham ((((nang xa) OR (mang xa))) OR (nang ma)) hoi. hieu va cam tuc va hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach tham ((((nang xa) or (mang xa))) or (nang ma)) hoi. hieu va cam tuc va hanh vai cua tre*.