Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
chat xuc » chat huu, cam xuc, chao xu
thanh ca » thanh cha, thanh cac, thanh ha
dung hoa » dung khoa, duong hoa, dung hoai
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cua triet, dua tren
so sach » so sanh, bo sach, hoc sach
tu chat » tu phat, tu cham, du chat
hieu tu » chieu tu, hieu tuc, hien tu
ly dung » ly dong, xay dung, ly khung
co sach » bo sach, cuon sach, hoc sach
cuu tre » cau tren, cau treo

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) or (co sach)) ly dung hoa hoc. hieu tu chat xuc ban thanh ca ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ly dung hoa hoc. hieu tu chat xuc ban thanh ca ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (co sach)) ly dung hoa hoc. hieu tu chat xuc ban thanh ca ((cua tre) or (cuu tre))*.