Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hang tai » hang va, dung tai
ban hang » ngan hang
qua cac » cua cac
tai cua » thai cua, tai cuc, tri cua
qua cay » cua cay, qua ca, qua cai
lua ban » luat ban, luan ban, cua ban
cua te » cua tu
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, me hoi

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 ((ma hoi) or (ma hoa)). hieu ((qua cay) OR (qua cac)) lua ban hang tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ((ma hoi) OR (ma hoa)). hieu ((qua cay) OR (qua cac)) lua ban hang tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ((ma hoi) or (ma hoa)). hieu ((qua cay) OR (qua cac)) lua ban hang tai cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((ma hoi) or (ma hoa)). hieu ((qua cay) OR (qua cac)) lua ban hang tai cua te*.