Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
vu khach » vu khanh, vu khac, vay khach
khach ky » hanh ky, thanh ky
thanh vi » hanh vi, thanh va, thanh ve
cau tren » cu tren, dau tren, ca tren
va chai » va cai, va chat, va chi
va cham » va chat, va tham
cuc ban » cua ban, cac ban, cuu ban
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau treo
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ky nang ma hoi. lieu ((va chai) or (va cham)) cuc ban thanh vi ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang ma hoi. lieu ((va chai) OR (va cham)) cuc ban thanh vi ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang ma hoi. lieu ((va chai) or (va cham)) cuc ban thanh vi ((cuu tre) or (cau tren))*.