Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban hang » ngan hang
hang vai » hang va, hang tai, hang hai
mai hoi » mai khoi, dai hoi, lai hoi
qua cay » cua cay, qua cac, qua ca
cay lua » vay luan
lua ban » luat ban, luan ban, cua ban
vai cua » dai cua, hai cua, lai cua
y nang » ly nang, v nang, may nang
cua te » cua tu

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 ((y nang) or (ky nang)) ((mai hoi) or (ma hoa)). hieu qua cay lua ban hang vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (ky nang)) ((mai hoi) OR (ma hoa)). hieu qua cay lua ban hang vai cua te.
• Adding a wildcard symbol may retrieve word variants: thu sach ((y nang) or (ky nang)) ((mai hoi) or (ma hoa)). hieu qua cay lua ban hang vai cua te*.