Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh va » thanh van, hanh va, thanh ha
dang xay » dang van, van xay
van cam » van nam, van cau, van dam
xuc ban » duc ban, cuc ban, quoc ban
van lam » van nam
vu sach » vu bach, vu khach
xay hoi » xa hoi, tay hoi, cay phoi
tu dang » thu dang, tu dong, su dang
su sach » so 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: ((vu sach) or (su sach)) tu dang xay hoi. hieu ((van cam) or (van lam)) xuc ban thanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) tu dang xay hoi. hieu ((van cam) OR (van lam)) xuc ban thanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (su sach)) tu dang xay hoi. hieu ((van cam) or (van lam)) xuc ban thanh va cua tre*.