Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cham xuc » chat xuc, cham soc, pham duc
danh di » danh du, xanh di, danh dien
va danh » va dinh, va dan, va hanh
hieu ve » hieu va, hieu van
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
cuu tre » cua tre, cau tren, cau treo
di cuu » di cau, di cua, dinh cuu

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: hoc sach y ((nang ma) OR (sang ma)) hoi. hieu ve ((cham xuc) OR (cam xuc)) va danh di cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y ((nang ma) OR (sang ma)) hoi. hieu ve ((cham xuc) or (cam xuc)) va danh di cuu tre~".
• Adding a wildcard symbol may retrieve word variants: hoc sach y ((nang ma) OR (sang ma)) hoi. hieu ve ((cham xuc) or (cam xuc)) va danh di cuu tre*.