Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
dang xay » dang van, van xay
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
xay hoi » xa hoi, tay hoi, cay phoi
hieu va » lieu va, hieu qua
bai cuu » bai cua, bai cung
cua tre » cua te, cuu tre, cua triet
y dang » ky dang, 2 dang, _ dang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y dang xay hoi. hieu va bai cuu ((ban doanh) or (ban hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y dang xay hoi. hieu va bai cuu ((ban doanh) OR (ban hanh)) vi cua tre*.