Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hieu va » hieu qua
hanh ky » hanh kem
xuc van » duc van, luc van, vuc van
te sach » toc sach
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
su tien » su kien, su hien, tu tieng
sach v » sach va, sach y, sach 2

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: te sach v ((nang ma) OR (tang ma)) hoi. ((hieu va) OR (lieu va)) cam xuc van hanh ky su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v ((nang ma) OR (tang ma)) hoi. ((hieu va) or (lieu va)) cam xuc van hanh ky su tien~".
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang ma) OR (tang ma)) hoi. ((hieu va) or (lieu va)) cam xuc van hanh ky su tien*.