Perhaps you should try some spelling variations:
vien dai » hien dai
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
ve cham » va cham, ve chat, vu cham
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty ((nang xa) or (nang x)) hoi. hieu ((ve cham) or (vien dai)) xuc van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang x)) hoi. hieu ((ve cham) OR (vien dai)) xuc van hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (nang x)) hoi. hieu ((ve cham) or (vien dai)) xuc van hanh vai cua tre*.