Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
ban hang » ngan hang
te sach » toc sach
cam qua » cau qua, cac qua, cay qua
lai cua » dai cua, hai cua, lai chau
lai cuu » lai chau, lai cuoc, loai cua
qua ban » cua ban, qua quan
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ve cam » ve cham, ve cac, va cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky sang ma hoa. hieu ve cam qua ban hang ((lai cuu) OR (lai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ky sang ma hoa. hieu ve cam qua ban hang ((lai cuu) OR (lai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky sang ma hoa. hieu ve cam qua ban hang ((lai cuu) OR (lai cua)) tre*.