Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach vu » sach va, sach tu, sach uu
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, cao suc
xuc van » duc van, luc van, vuc van
hanh va » hang va, hanh vi
su tien » su kien, su hien, tu tieng
va cao » va cac, va co, va dao

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

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