Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh tai » thanh hai, thanh toan, doanh tai
su triet » su viet, su tien, ve triet
sach thi » sach tai, sach thieu, sach tham
sach thu » sach thue, sach thieu, sach tham
cua tre » cua te, cuu tre, cua triet
duc ban » duc tan, duc van, dua ban
hieu va » lieu va, hieu qua
hang xa » hoang xa, hang va, hang ca
cam duc » cam xuc, cao duc, pham duc
va cam » va cham, va cac, va cao

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 thi) OR (sach thu)) hang xa hoi. hieu va cam duc ban thanh tai ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach thi) OR (sach thu)) hang xa hoi. hieu va cam duc ban thanh tai ((cua tre) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach thi) OR (sach thu)) hang xa hoi. hieu va cam duc ban thanh tai ((cua tre) or (su triet))*".