Perhaps you should try some spelling variations:
ban hang » ngan hang
thu canh » thuc hanh, thu cong, thu ban
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
hieu vu » hieu va, hieu ve, hieu su
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
vu cham » va cham, vu kham, tu cham
vi cua » vai cua, di cua
tu can » tu ban, tu cac
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu can) or (thu canh)) ky dang xay hoi. hieu vu cham soc ((van hanh) or (ban hang)) vi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu can) OR (thu canh)) ky dang xay hoi. hieu vu cham soc ((van hanh) OR (ban hang)) vi cua cu.
• Adding a wildcard symbol may retrieve word variants: ((tu can) or (thu canh)) ky dang xay hoi. hieu vu cham soc ((van hanh) or (ban hang)) vi cua cu*.