Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh di » thanh doi, thanh de, thanh do
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky dang, ky tang
xuc van » duc van, luc van, vuc van
sach ky » sac ky, sach y, sach ty
ve cac » va cac, vien cac
ve cai » va cai, ve tai, ve cau
ma hoi » mai hoi, xa hoi, me hoi
di cua » dai cua, doi cua, de cua

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