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 dinh » van dinh, va kinh, va tinh
cuu tre » cua tre, cau tren
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cai ky nang x ho. hieu ve cham soc ((ban hang) or (va dinh)) di ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky nang x ho. hieu ve cham soc ((ban hang) OR (va dinh)) di ((cuu tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cai ky nang x ho. hieu ve cham soc ((ban hang) or (va dinh)) di ((cuu tre) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang x ho. hieu ve cham soc ((ban hang) or (va dinh)) di ((cuu tre) OR (cau treo))*.