Perhaps you should try some spelling variations:
vat thanh » dat thanh, gat thanh, tat thanh
toc sach » hoc sach, doc sach, thuoc sach
nha thuc » nhan thuc, nha thuoc, nham thuc
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ke » hieu kem, chieu ke, hieu ky
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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: ((su sach) OR (((te sach) OR (toc sach)))) ky nang xa hoi. hieu ke nha thuc vat thanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (((te sach) OR (toc sach)))) ky nang xa hoi. hieu ke nha thuc vat thanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (((te sach) OR (toc sach)))) ky nang xa hoi. hieu ke nha thuc vat thanh vi cua tre*.