Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh ve » hanh ve, thanh va, thanh vien
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cac tuc » cac toc, cac tac, cac nuoc
cua tre » cua te, cuu tre, cua triet
cac tu » cac thu, cach tu, cac du
ve cua » le cua, de cua, te cua

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky lang xa hoi. hieu qua ((cac tuc) OR (cac tu)) va thanh ve cua tre~".
• Adding a wildcard symbol may retrieve word variants: so sach ky lang xa hoi. hieu qua ((cac tuc) OR (cac tu)) va thanh ve cua tre*.