Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
de thanh » le thanh
so sach » so sanh, bo sach, co sach
sach tu » sach thu, cach tu, sach ty
tu mang » tu manh, tu lang, tu quang
mang xa » lang xa, mang may, dang xay
ve chim » va chim, ve cham, ve chinh
va cham » va chat, va tham
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
cuu de » cuu ve

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 tu mang xa hoi. hieu ((ve chim) or (va cham)) cuu de thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach tu mang xa hoi. hieu ((ve chim) OR (va cham)) cuu de thanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach tu mang xa hoi. hieu ((ve chim) or (va cham)) cuu de thanh hai cua tre*.