Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
ban hang » ngan hang
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
cuu tre » cua tre, cau tren, cau treo
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky
di cuu » di cau, di cua, dinh cuu

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 va) or (hieu van)) cham soc ((ban hang) or (va danh)) di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky nang x ho. ((hieu va) OR (hieu van)) cham soc ((ban hang) OR (va danh)) di cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang x ho. ((hieu va) or (hieu van)) cham soc ((ban hang) or (va danh)) di cuu tre*.