Perhaps you should try some spelling variations:
van thanh » van tuan
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
sach ky » sac ky, sach y, sach ty
di cua » dai cua, doi cua, de cua
va cam » va cham, va cac, va cao
ve cam » ve cham, ve cac, ve cai
ma hoi » mai hoi, xa hoi, ma hoa

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: tu sach ky sang ma hoi. hieu ((ve cam) OR (va cam)) xuc ((van thanh) OR (ban thanh)) di cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang ma hoi. hieu ((ve cam) OR (va cam)) xuc ((van thanh) or (ban thanh)) di cua vat~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang ma hoi. hieu ((ve cam) OR (va cam)) xuc ((van thanh) or (ban thanh)) di cua vat*.