Perhaps you should try some spelling variations:
thien van » thi van
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
van bac » van ban, van bao, van hac
duc van » duc va, duc tan, duc manh
xuc ban » duc ban, cuc ban, quoc ban
te sach » toc sach
nang co » nang cao, nang doc, nang noi
hoc anh » hoc nganh, hoc nhanh, ngoc anh
cua tre » cua te, cuu tre, cua triet
co hoi » co hoc, co loi

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) OR (hoc anh)) ky nang co hoi. thien van bac ((xuc ban) OR (duc van)) hanh thai cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (hoc anh)) ky nang co hoi. thien van bac ((xuc ban) or (duc van)) hanh thai cua tre*.