Perhaps you should try some spelling variations:
van xanh » van anh, van hanh, van manh
so sach » so sanh, bo sach, co sach
tang ma » mang may, tang van
xanh di » danh di, vanh dai, xanh tai
ve cham » va cham, vu cham, ve chim
xuc van » duc van, luc van, vuc van
ve chat » va chat, van chat
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de cua
y tang » ky tang, 6 tang, 7 tang
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: so sach y tang ma hoi. hieu ((((ve cham) OR (ve chat))) OR (va cam)) xuc van xanh di cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y tang ma hoi. hieu ((((ve cham) OR (ve chat))) or (va cam)) xuc van xanh di cua vat~".
• Adding a wildcard symbol may retrieve word variants: so sach y tang ma hoi. hieu ((((ve cham) OR (ve chat))) or (va cam)) xuc van xanh di cua vat*.