Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
su tien » su hien, tu tieng, dau tien
hanh ve » hanh vi, hanh va, hanh kem
xuc van » duc van, luc van, vuc van
cao xuc » cam xuc, cao duc, cao suc
qua cao » qua cac, qua ca, qua cai
sach vu » sach va, sach tu, sach uu
nang xa » lang xa, nang ma, mang xa
kien » bien, vien, dien

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach vu ((nang xa) or (nang x)) hoi. hieu qua cao xuc van hanh ve ((su tien) or (su kien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vu ((nang xa) OR (nang x)) hoi. hieu qua cao xuc van hanh ve ((su tien) OR (su kien)).
• Adding a wildcard symbol may retrieve word variants: tu sach vu ((nang xa) or (nang x)) hoi. hieu qua cao xuc van hanh ve ((su tien) or (su kien))*.