Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac
dang mat » dang vat, dang mau, dung mat
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
dung dat » dung va, dung tai
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
hoc anh » hoc nganh, hoc nhanh, ngoc anh
va cam » va cham, va cac, va cao
cua te » cua tu

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) OR (hoc anh)) tu ((dang mat) OR (dung dat)) hoa. lieu va cam duc van hanh dai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc anh)) tu ((dang mat) or (dung dat)) hoa. lieu va cam duc van hanh dai cua te~".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) OR (hoc anh)) tu ((dang mat) or (dung dat)) hoa. lieu va cam duc van hanh dai cua te*.