Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hai » thanh phan, thanh hoa, thanh san
mai khoi » mai khoa, tai khoa, cac khoi
cham dua » chay dua, cham giua, pham duc
va triet » va thiet, va trien, ve triet
te sach » toc sach
mai hoi » dai hoi, lai hoi, mai doi
hieu va » lieu va, hieu qua
va cham » va chat, va tham
dua ban » dia ban, cua ban, qua ban
y nang » ky nang, ly nang, v nang
hai va » hai van, thai va, hoi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((mai hoi) or (mai khoi)). hieu va cham dua ban thanh hai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((mai hoi) OR (mai khoi)). hieu va cham dua ban thanh hai va triet.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((mai hoi) or (mai khoi)). hieu va cham dua ban thanh hai va triet*.