Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
mang xa » lang xa, dang xay, mang cua
qua cam » qua cham, qua cac, qua ca
cam duc » cam xuc, cao duc, pham duc
duc gia » quoc gia
cua tre » cua te, cuu tre, cua triet
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty ((((mang xa) OR (mang may))) or (nang x)) hoi. hieu qua cam duc gia thanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((((mang xa) OR (mang may))) OR (nang x)) hoi. hieu qua cam duc gia thanh de cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((((mang xa) OR (mang may))) or (nang x)) hoi. hieu qua cam duc gia thanh de cua tre*".