Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh di » hanh vi, hanh de, hang di
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
mang xa » mang may, dang xay, mang cua
lang xa » lang ha, dang xay, lang van
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
di cuu » di cau, di cua, dinh cuu

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 ty ((mang xa) or (lang xa)) hoi. hieu ve cac ((tuc va) or (duc va)) hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty ((mang xa) OR (lang xa)) hoi. hieu ve cac ((tuc va) OR (duc va)) hanh di cuu tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty ((mang xa) or (lang xa)) hoi. hieu ve cac ((tuc va) or (duc va)) hanh di cuu tre*.