Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
va thanh » gia thanh, ban thanh, va tinh
so sach » so sanh, bo sach, co sach
mang xa » mang may, dang xay, mang cua
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach ty
de cua » le cua, te cua, dieu cua
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao
cua te » cua tu
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky ((mang xa) or (lang xa)) hoi. hieu ((va cam) or (va co)) xuc va thanh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((mang xa) OR (lang xa)) hoi. hieu ((va cam) OR (va co)) xuc va thanh de cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ky ((mang xa) or (lang xa)) hoi. hieu ((va cam) or (va co)) xuc va thanh de cua te*.