Perhaps you should try some spelling variations:
ban hang » ngan hang
tham soc » cham soc, tham nuoc, thai son
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
va dauh » va danh, va doanh
cuu tre » cua tre, cau tren, cau treo
cai ky » cao ky, cac ky, cam ky
va dau » va dao
di cuu » di cau, di cua, dinh cuu
tu cai » tu cac, tu can, tu bai
x hoi » xa hoi, o hoi, x ho

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