Perhaps you should try some spelling variations:
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
cao xuc » cam xuc, cao duc, cao suc
su hien » su kien, su tien, thu hien
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
va cao » va cac, va co, va dao
ve su » va su

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 tu ((nang xa) or (lang xa)) hoi. hieu va cao xuc ((van hanh) or (ban hanh)) ve su hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ((nang xa) OR (lang xa)) hoi. hieu va cao xuc ((van hanh) OR (ban hanh)) ve su hien.
• Adding a wildcard symbol may retrieve word variants: tu sach tu ((nang xa) or (lang xa)) hoi. hieu va cao xuc ((van hanh) or (ban hanh)) ve su hien*.