Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
tu sach » thu sach, su sach, te sach
cam luc » cam xuc, cau luc
hieu ve » hieu va, hieu van
va sang » van sang, vua sang, va nang
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
v sang » ve sang, _ sang, van sang
vi cua » vai cua, di 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 ((v sang) OR (va sang)) ma hoi. hieu ve cam luc ((va thanh) OR (ban thanh)) vi cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((v sang) OR (va sang)) ma hoi. hieu ve cam luc ((va thanh) or (ban thanh)) vi cua vat~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((v sang) OR (va sang)) ma hoi. hieu ve cam luc ((va thanh) or (ban thanh)) vi cua vat*.