Perhaps you should try some spelling variations:
vien dai » hien dai
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
tai cua » thai cua, tai cuc, tri cua
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((((ve cam) OR (va cam))) OR (vien dai)) xuc van hanh tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((((ve cam) OR (va cam))) or (vien dai)) xuc van hanh tai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((((ve cam) OR (va cam))) or (vien dai)) xuc van hanh tai cua tre*.