Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
nang mai » nang ma, nang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
ban dan » ban hang, ban hanh, ban quan
su viet » so viet
va cam » va cac, va cao, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang mai khoi. lieu ((va cam) OR (va cham)) xuc ((ban doanh) or (ban dan)) va su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang mai khoi. lieu ((va cam) OR (va cham)) xuc ((ban doanh) OR (ban dan)) va su viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang mai khoi. lieu ((va cam) OR (va cham)) xuc ((ban doanh) or (ban dan)) va su viet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang mai khoi. lieu ((va cam) OR (va cham)) xuc ((ban doanh) or (ban dan)) va su viet*.