Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
hang do » hang doi, dang do, hang di
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
do hoi » do choi, do hoai, do thoi
du ban » dua ban, duc ban, du bao
cua te » cua tu

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 ty hang do hoi. hieu va cac du ban doanh tai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty hang do hoi. hieu va cac du ban doanh tai ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty hang do hoi. hieu va cac du ban doanh tai ((cuu tre) or (cua te))*.