Perhaps you should try some spelling variations:
sach hay » sach han, sach ha, sach nay
hieu van » hieu va, thien van, lieu va
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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

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