Perhaps you should try some spelling variations:
ban hang » ngan hang
cau treo » cau theo, cau tren, cau triet
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va danh » va dinh, va dan, va hanh
co hoi » co hoc, co loi
di cau » da cau, diem cau
o hoi » o hoc, o hai, o hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((o hoi) or (co hoi)). hieu ve cham soc ((ban hang) or (va danh)) di cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((o hoi) OR (co hoi)). hieu ve cham soc ((ban hang) OR (va danh)) di cau treo.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((o hoi) or (co hoi)). hieu ve cham soc ((ban hang) or (va danh)) di cau treo*.