Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
nang mai » nang ma, nang tai, lang mai
ban hanh » ban hang
thu sac » thu sach, thu san, thu xac
mai hoi » mai khoi, dai hoi, lai hoi
cam dua » ca dua, cay dua, chay dua
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
vi su » va su, ve su, oi su
ki su » ky su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang mai hoi. lieu va cam dua ((ban doanh) or (ban hanh)) ((vi su) OR (ki su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang mai hoi. lieu va cam dua ((ban doanh) OR (ban hanh)) ((vi su) OR (ki su)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky nang mai hoi. lieu va cam dua ((ban doanh) or (ban hanh)) ((vi su) OR (ki su)) triet".
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang mai hoi. lieu va cam dua ((ban doanh) or (ban hanh)) ((vi su) OR (ki su)) triet*.