Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, toan doanh
ban danh » ban dan, van danh, han danh
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang so » nang som, nang co, nang ho
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
so hai » son hai, su hai, so ha
va cam » va cham, va cac, va cao
di cuu » di cau, di cua, dinh cuu

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 ky nang so hai. hieu va cam xuc ((((ban danh) OR (ban doanh))) or (ban hanh)) di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang so hai. hieu va cam xuc ((((ban danh) OR (ban doanh))) OR (ban hanh)) di cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang so hai. hieu va cam xuc ((((ban danh) OR (ban doanh))) or (ban hanh)) di cuu tre*".