Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
xuc ban » duc ban, cuc ban, quoc ban
xuc van » duc van, luc van, vuc van
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
va hien » van hien, va lien, va bien
vai va » mai va, dai va, hai va

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