Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cau treo » cau theo, cau tren, cau triet
mai hoi » mai khoi, dai hoi, lai hoi
hieu vu » hieu va, hieu ve, hieu su
sach ty » sach y, sach tu, sach thu
cham lo » cham o, cam lo, cham soc
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
ty nang » ky nang, ty xang, ty hang
vai cau » va cau, van cau, vai cac
vu cham » va cham, vu kham, tu cham

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang ((mai hoi) or (ma hoa)). hieu vu cham lo ((va hanh) or (va danh)) vai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ((mai hoi) OR (ma hoa)). hieu vu cham lo ((va hanh) OR (va danh)) vai cau treo.
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ((mai hoi) or (ma hoa)). hieu vu cham lo ((va hanh) or (va danh)) vai cau treo*.