Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hoc sach » hoc sinh, hoc cac, hoc anh
toc cham » toc thai
thanh va » thanh van, hanh va, thanh ha
dong hoa » dong hoc, dong co
xuc ban » duc ban, cuc ban, quoc ban
tu cham » thi cham
hoa hoi » khoa hoi, hoa hoc, hoa doi
ly dong » ly dung, lao dong, huy dong
co sach » bo sach, cuon sach
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (co sach)) ly dong hoa hoi. hieu ((tu cham) or (toc cham)) xuc ban thanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (co sach)) ly dong hoa hoi. hieu ((tu cham) OR (toc cham)) xuc ban thanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (co sach)) ly dong hoa hoi. hieu ((tu cham) or (toc cham)) xuc ban thanh va cua tre*.